79861371 has 4 divisors (see below), whose sum is σ = 106481832. Its totient is φ = 53240912.

The previous prime is 79861367. The next prime is 79861373. The reversal of 79861371 is 17316897.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 79861371 - 2² = 79861367 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79861373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13310226 + ... + 13310231.

It is an arithmetic number, because the mean of its divisors is an integer number (26620458).

Almost surely, 2^79861371 is an apocalyptic number.

79861371 is a deficient number, since it is larger than the sum of its proper divisors (26620461).

79861371 is a wasteful number, since it uses less digits than its factorization.

79861371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26620460.

The product of its digits is 63504, while the sum is 42.

The square root of 79861371 is about 8936.5189531495. The cubic root of 79861371 is about 430.6379048320.

The spelling of 79861371 in words is "seventy-nine million, eight hundred sixty-one thousand, three hundred seventy-one".