79153998 has 32 divisors (see below), whose sum is σ = 197372160. Its totient is φ = 20559360.

The previous prime is 79153993. The next prime is 79154011. The reversal of 79153998 is 89935197.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 79153998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79153993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85203 + ... + 86126.

It is an arithmetic number, because the mean of its divisors is an integer number (6167880).

Almost surely, 2^79153998 is an apocalyptic number.

79153998 is an abundant number, since it is smaller than the sum of its proper divisors (118218162).

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

79153998 is a wasteful number, since it uses less digits than its factorization.

79153998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171352.

The product of its digits is 612360, while the sum is 51.

The square root of 79153998 is about 8896.8532639355. The cubic root of 79153998 is about 429.3626722157.

The spelling of 79153998 in words is "seventy-nine million, one hundred fifty-three thousand, nine hundred ninety-eight".