79618812 has 48 divisors (see below), whose sum is σ = 228652032. Its totient is φ = 20998080.

The previous prime is 79618811. The next prime is 79618813. The reversal of 79618812 is 21881697.

It is an interprime number because it is at equal distance from previous prime (79618811) and next prime (79618813).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79618811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35364 + ... + 37547.

It is an arithmetic number, because the mean of its divisors is an integer number (4763584).

Almost surely, 2^79618812 is an apocalyptic number.

It is an amenable number.

79618812 is an abundant number, since it is smaller than the sum of its proper divisors (149033220).

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

79618812 is a wasteful number, since it uses less digits than its factorization.

79618812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72938 (or 72936 counting only the distinct ones).

The product of its digits is 48384, while the sum is 42.

The square root of 79618812 is about 8922.9374087237. The cubic root of 79618812 is about 430.2014776033.

The spelling of 79618812 in words is "seventy-nine million, six hundred eighteen thousand, eight hundred twelve".