977969904 has 80 divisors (see below), whose sum is σ = 2597762304. Its totient is φ = 316915200.

The previous prime is 977969893. The next prime is 977969911. The reversal of 977969904 is 409969779.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246819 + ... + 250749.

Almost surely, 2^977969904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 977969904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1298881152).

977969904 is an abundant number, since it is smaller than the sum of its proper divisors (1619792400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

977969904 is a wasteful number, since it uses less digits than its factorization.

977969904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4086 (or 4080 counting only the distinct ones).

The product of its (nonzero) digits is 7715736, while the sum is 60.

The square root of 977969904 is about 31272.5103565416. The cubic root of 977969904 is about 992.6020398148.

The spelling of 977969904 in words is "nine hundred seventy-seven million, nine hundred sixty-nine thousand, nine hundred four".