979400816 has 20 divisors (see below), whose sum is σ = 1899493752. Its totient is φ = 489208896.

The previous prime is 979400797. The next prime is 979400819. The reversal of 979400816 is 618004979.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979400819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14006 + ... + 46421.

Almost surely, 2^979400816 is an apocalyptic number.

It is an amenable number.

979400816 is a deficient number, since it is larger than the sum of its proper divisors (920092936).

979400816 is a wasteful number, since it uses less digits than its factorization.

979400816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61448 (or 61442 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 979400816 is about 31295.3801063352. The cubic root of 979400816 is about 993.0859108801.

The spelling of 979400816 in words is "nine hundred seventy-nine million, four hundred thousand, eight hundred sixteen".