79663900 has 36 divisors (see below), whose sum is σ = 174832560. Its totient is φ = 31504000.

The previous prime is 79663891. The next prime is 79663901. The reversal of 79663900 is 936697.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79663901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4425 + ... + 13375.

It is an arithmetic number, because the mean of its divisors is an integer number (4856460).

Almost surely, 2^79663900 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79663900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87416280).

79663900 is an abundant number, since it is smaller than the sum of its proper divisors (95168660).

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

79663900 is a wasteful number, since it uses less digits than its factorization.

79663900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9054 (or 9047 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 40.

The square root of 79663900 is about 8925.4635733949. The cubic root of 79663900 is about 430.2826697379.

The spelling of 79663900 in words is "seventy-nine million, six hundred sixty-three thousand, nine hundred".