78968799 has 36 divisors (see below), whose sum is σ = 141179376. Its totient is φ = 41648256.

The previous prime is 78968783. The next prime is 78968803. The reversal of 78968799 is 99786987.

It is not a de Polignac number, because 78968799 - 2⁴ = 78968783 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78968779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6939 + ... + 14355.

Almost surely, 2^78968799 is an apocalyptic number.

78968799 is a deficient number, since it is larger than the sum of its proper divisors (62210577).

78968799 is a wasteful number, since it uses less digits than its factorization.

78968799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7456 (or 7440 counting only the distinct ones).

The product of its digits is 13716864, while the sum is 63.

The square root of 78968799 is about 8886.4390505984. The cubic root of 78968799 is about 429.0275464405.

The spelling of 78968799 in words is "seventy-eight million, nine hundred sixty-eight thousand, seven hundred ninety-nine".