3977562897 has 72 divisors (see below), whose sum is σ = 7341235200. Its totient is φ = 2052025920.

The previous prime is 3977562893. The next prime is 3977562907. The reversal of 3977562897 is 7982657793.

It is not a de Polignac number, because 3977562897 - 2² = 3977562893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (3977562893) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 720048 + ... + 725550.

It is an arithmetic number, because the mean of its divisors is an integer number (101961600).

Almost surely, 2^3977562897 is an apocalyptic number.

It is an amenable number.

3977562897 is a deficient number, since it is larger than the sum of its proper divisors (3363672303).

3977562897 is a wasteful number, since it uses less digits than its factorization.

3977562897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5683 (or 5673 counting only the distinct ones).

The product of its digits is 40007520, while the sum is 63.

The square root of 3977562897 is about 63067.9228847756. The cubic root of 3977562897 is about 1584.4274283177.

The spelling of 3977562897 in words is "three billion, nine hundred seventy-seven million, five hundred sixty-two thousand, eight hundred ninety-seven".