78939708 has 12 divisors (see below), whose sum is σ = 184192680. Its totient is φ = 26313232.

The previous prime is 78939697. The next prime is 78939761. The reversal of 78939708 is 80793987.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 3289143 + ... + 3289166.

It is an arithmetic number, because the mean of its divisors is an integer number (15349390).

Almost surely, 2^78939708 is an apocalyptic number.

It is an amenable number.

78939708 is an abundant number, since it is smaller than the sum of its proper divisors (105252972).

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

78939708 is a wasteful number, since it uses less digits than its factorization.

78939708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6578316 (or 6578314 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 51.

The square root of 78939708 is about 8884.8020799565. The cubic root of 78939708 is about 428.9748573895.

The spelling of 78939708 in words is "seventy-eight million, nine hundred thirty-nine thousand, seven hundred eight".