79863858 has 48 divisors (see below), whose sum is σ = 183980160. Its totient is φ = 24951168.

The previous prime is 79863827. The next prime is 79863881. The reversal of 79863858 is 85836897.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109491 + ... + 110217.

It is an arithmetic number, because the mean of its divisors is an integer number (3832920).

Almost surely, 2^79863858 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79863858, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91990080).

79863858 is an abundant number, since it is smaller than the sum of its proper divisors (104116302).

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

79863858 is a wasteful number, since it uses less digits than its factorization.

79863858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111 (or 1108 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The square root of 79863858 is about 8936.6581002073. The cubic root of 79863858 is about 430.6423750172.

The spelling of 79863858 in words is "seventy-nine million, eight hundred sixty-three thousand, eight hundred fifty-eight".