79864100 has 18 divisors (see below), whose sum is σ = 173305314. Its totient is φ = 31945600.

The previous prime is 79864097. The next prime is 79864123. The reversal of 79864100 is 146897.

It can be written as a sum of positive squares in 3 ways, for example, as 13147876 + 66716224 = 3626^2 + 8168^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 399221 + ... + 399420.

It is an arithmetic number, because the mean of its divisors is an integer number (9628073).

Almost surely, 2^79864100 is an apocalyptic number.

It is an amenable number.

79864100 is an abundant number, since it is smaller than the sum of its proper divisors (93441214).

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

79864100 is a wasteful number, since it uses less digits than its factorization.

79864100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798655 (or 798648 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 79864100 is about 8936.6716399340. The cubic root of 79864100 is about 430.6428099880.

The spelling of 79864100 in words is "seventy-nine million, eight hundred sixty-four thousand, one hundred".