78979804 has 6 divisors (see below), whose sum is σ = 138214664. Its totient is φ = 39489900.

The previous prime is 78979783. The next prime is 78979829. The reversal of 78979804 is 40897987.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 9872472 + ... + 9872479.

Almost surely, 2^78979804 is an apocalyptic number.

It is an amenable number.

78979804 is a deficient number, since it is larger than the sum of its proper divisors (59234860).

78979804 is a wasteful number, since it uses less digits than its factorization.

78979804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19744955 (or 19744953 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 52.

The square root of 78979804 is about 8887.0582309333. The cubic root of 78979804 is about 429.0474751082.

The spelling of 78979804 in words is "seventy-eight million, nine hundred seventy-nine thousand, eight hundred four".