79898631 has 4 divisors (see below), whose sum is σ = 106531512. Its totient is φ = 53265752.

The previous prime is 79898597. The next prime is 79898633. The reversal of 79898631 is 13689897.

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 79898631 - 2¹³ = 79890439 is a prime.

It is a super-2 number, since 2×79898631² = 12767582471348322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79898633) 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, 13316436 + ... + 13316441.

It is an arithmetic number, because the mean of its divisors is an integer number (26632878).

Almost surely, 2^79898631 is an apocalyptic number.

79898631 is a deficient number, since it is larger than the sum of its proper divisors (26632881).

79898631 is a wasteful number, since it uses less digits than its factorization.

79898631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26632880.

The product of its digits is 653184, while the sum is 51.

The square root of 79898631 is about 8938.6034144043. The cubic root of 79898631 is about 430.7048670082.

The spelling of 79898631 in words is "seventy-nine million, eight hundred ninety-eight thousand, six hundred thirty-one".