999885

999,885 is a natural number that follows 999,884 and precedes 999,886. In decimal notation it is a six-digit odd integer ending with 5, and it is close to 1,000,000, differing from it by 115.

Mathematical properties and factors: 999,885 has the prime factorization 3 × 5 × 191 × 349. All prime factors are distinct, so the number is squarefree, and it has 2^4 = 16 positive divisors. The digit sum is 9 + 9 + 9 + 8 + 8 + 5 = 48, which confirms its divisibility by 3, and since it ends in 5, it is divisible by 5. Consequently, it is divisible by 15.

Sum of divisors: Using its prime factorization, the sum of all positive divisors is (1 + 3)(1 + 5)(1 + 191)(1 + 349) = 4 × 6 × 192 × 350 = 1,612,800.

Relation to powers of ten: 999,885 can be expressed as 1,000,000 − 115, i.e., 10^6 − 115. This places it near the upper end of the six-digit range, but there is no widely noted mathematical constant or identity uniquely associated with this specific number.

Context: Beyond its basic arithmetic properties, 999,885 is primarily of interest as a concrete example of a composite, squarefree six-digit integer with a four-prime factorization. Its factors and divisor structure illustrate standard properties of numbers built from multiple distinct primes.