79015398 has 32 divisors (see below), whose sum is σ = 197026560. Its totient is φ = 20523360.

The previous prime is 79015397. The next prime is 79015399. The reversal of 79015398 is 89351097.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (79015397) and next prime (79015399).

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 (79015397) 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, 85053 + ... + 85976.

It is an arithmetic number, because the mean of its divisors is an integer number (6157080).

Almost surely, 2^79015398 is an apocalyptic number.

79015398 is an abundant number, since it is smaller than the sum of its proper divisors (118011162).

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

79015398 is a wasteful number, since it uses less digits than its factorization.

79015398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171052.

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 79015398 is about 8889.0605802863. The cubic root of 79015398 is about 429.1119186810. Note that the first 3 decimals are identical.

The spelling of 79015398 in words is "seventy-nine million, fifteen thousand, three hundred ninety-eight".