3897297957 has 48 divisors (see below), whose sum is σ = 6411104640. Its totient is φ = 2092511232.

The previous prime is 3897297953. The next prime is 3897297967. The reversal of 3897297957 is 7597927983.

It is not a de Polignac number, because 3897297957 - 2² = 3897297953 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3897297953) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2295733 + ... + 2297429.

It is an arithmetic number, because the mean of its divisors is an integer number (133564680).

Almost surely, 2^3897297957 is an apocalyptic number.

It is an amenable number.

3897297957 is a deficient number, since it is larger than the sum of its proper divisors (2513806683).

3897297957 is a wasteful number, since it uses less digits than its factorization.

3897297957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2650 (or 2643 counting only the distinct ones).

The product of its digits is 60011280, while the sum is 66.

The square root of 3897297957 is about 62428.3425777106. The cubic root of 3897297957 is about 1573.6973129643.

The spelling of 3897297957 in words is "three billion, eight hundred ninety-seven million, two hundred ninety-seven thousand, nine hundred fifty-seven".