78986926 has 4 divisors (see below), whose sum is σ = 118480392. Its totient is φ = 39493462.

The previous prime is 78986917. The next prime is 78986969. The reversal of 78986926 is 62968987.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19746730 + ... + 19746733.

It is an arithmetic number, because the mean of its divisors is an integer number (29620098).

Almost surely, 2^78986926 is an apocalyptic number.

78986926 is a deficient number, since it is larger than the sum of its proper divisors (39493466).

78986926 is a wasteful number, since it uses less digits than its factorization.

78986926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39493465.

The product of its digits is 2612736, while the sum is 55.

The square root of 78986926 is about 8887.4589169233. The cubic root of 78986926 is about 429.0603711656.

The spelling of 78986926 in words is "seventy-eight million, nine hundred eighty-six thousand, nine hundred twenty-six".