977604869 has 4 divisors (see below), whose sum is σ = 979812096. Its totient is φ = 975397644.

The previous prime is 977604863. The next prime is 977604889. The reversal of 977604869 is 968406779.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 977604869 - 2²⁰ = 976556293 is a prime.

It is a super-2 number, since 2×977604869² = 1911422559785014322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977604863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1102949 + ... + 1103834.

It is an arithmetic number, because the mean of its divisors is an integer number (244953024).

Almost surely, 2^977604869 is an apocalyptic number.

It is an amenable number.

977604869 is a deficient number, since it is larger than the sum of its proper divisors (2207227).

977604869 is a wasteful number, since it uses less digits than its factorization.

977604869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2207226.

The product of its (nonzero) digits is 4572288, while the sum is 56.

The square root of 977604869 is about 31266.6734559339. The cubic root of 977604869 is about 992.4785255925.

The spelling of 977604869 in words is "nine hundred seventy-seven million, six hundred four thousand, eight hundred sixty-nine".