7976907897 has 16 divisors (see below), whose sum is σ = 12218275200. Its totient is φ = 4534612992.

The previous prime is 7976907893. The next prime is 7976907907. The reversal of 7976907897 is 7987096797.

It is not a de Polignac number, because 7976907897 - 2² = 7976907893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7976907893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 980022 + ... + 988127.

It is an arithmetic number, because the mean of its divisors is an integer number (763642200).

Almost surely, 2^7976907897 is an apocalyptic number.

It is an amenable number.

7976907897 is a deficient number, since it is larger than the sum of its proper divisors (4241367303).

7976907897 is a wasteful number, since it uses less digits than its factorization.

7976907897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1968352.

The product of its (nonzero) digits is 84015792, while the sum is 69.

The square root of 7976907897 is about 89313.5370310683. The cubic root of 7976907897 is about 1998.0738035625.

The spelling of 7976907897 in words is "seven billion, nine hundred seventy-six million, nine hundred seven thousand, eight hundred ninety-seven".