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3977

3977 is a natural number that follows 3976 and precedes 3978. It is an odd composite number, with a prime factorization of 3977 = 41 × 97, making it a semiprime.

Its divisors are 1, 41, 97, and 3977, so the number of divisors is four. Euler’s totient

In various representations, 3977 appears as 111110001001 in binary and as MMMCMLXXVII in Roman numerals. The

As a semiprime (a product of two distinct primes), 3977 is sometimes cited in introductory number theory

function
yields
φ(3977)
=
(41
−
1)(97
−
1)
=
3840,
and
the
sum
of
all
divisors
is
σ(3977)
=
(1
+
41)(1
+
97)
=
4116.
The
sum
of
proper
divisors
is
139
(1
+
41
+
97),
which
shows
that
3977
is
not
a
perfect
number.
decimal
digits
sum
to
26,
giving
a
digital
root
of
8.
The
number
is
congruent
to
1
modulo
4
and
also
congruent
to
1
modulo
8,
reflecting
its
odd,
non-multiple-of-two
nature.
and
cryptography
discussions
to
illustrate
factoring
properties
and
primality
concepts.
However,
due
to
its
small
size,
it
has
no
practical
cryptographic
use
and
is
primarily
of
theoretical
interest
or
educational
value.