3972685957 has 8 divisors (see below), whose sum is σ = 4010764032. Its totient is φ = 3934725600.

The previous prime is 3972685943. The next prime is 3972685961. The reversal of 3972685957 is 7595862793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3972685957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3972685895 and 3972685904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3972685907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39148 + ... + 97354.

It is an arithmetic number, because the mean of its divisors is an integer number (501345504).

Almost surely, 2^3972685957 is an apocalyptic number.

It is an amenable number.

3972685957 is a deficient number, since it is larger than the sum of its proper divisors (38078075).

3972685957 is a wasteful number, since it uses less digits than its factorization.

3972685957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58859.

The product of its digits is 28576800, while the sum is 61.

The square root of 3972685957 is about 63029.2468382734. The cubic root of 3972685957 is about 1583.7796013294.

It can be divided in two parts, 397268 and 5957, that added together give a square (403225 = 635²).

The spelling of 3972685957 in words is "three billion, nine hundred seventy-two million, six hundred eighty-five thousand, nine hundred fifty-seven".