78958988 has 12 divisors (see below), whose sum is σ = 138421752. Its totient is φ = 39409920.

The previous prime is 78958973. The next prime is 78959009. The reversal of 78958988 is 88985987.

It is a self number, because there is not a number n which added to its sum of digits gives 78958988.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14798 + ... + 19413.

It is an arithmetic number, because the mean of its divisors is an integer number (11535146).

Almost surely, 2^78958988 is an apocalyptic number.

It is an amenable number.

78958988 is a deficient number, since it is larger than the sum of its proper divisors (59462764).

78958988 is a wasteful number, since it uses less digits than its factorization.

78958988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34792 (or 34790 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 62.

The square root of 78958988 is about 8885.8870125610. The cubic root of 78958988 is about 429.0097783953.

The spelling of 78958988 in words is "seventy-eight million, nine hundred fifty-eight thousand, nine hundred eighty-eight".