977342399 has 16 divisors (see below), whose sum is σ = 1099384704. Its totient is φ = 861151200.

The previous prime is 977342339. The next prime is 977342411. The reversal of 977342399 is 993243779.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-977342399 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 977342399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977342339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54077 + ... + 69849.

It is an arithmetic number, because the mean of its divisors is an integer number (68711544).

Almost surely, 2^977342399 is an apocalyptic number.

977342399 is a deficient number, since it is larger than the sum of its proper divisors (122042305).

977342399 is a wasteful number, since it uses less digits than its factorization.

977342399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15958.

The product of its digits is 2571912, while the sum is 53.

The square root of 977342399 is about 31262.4758936332. The cubic root of 977342399 is about 992.3896965358.

The spelling of 977342399 in words is "nine hundred seventy-seven million, three hundred forty-two thousand, three hundred ninety-nine".