79630231 has 4 divisors (see below), whose sum is σ = 79685200. Its totient is φ = 79575264.

The previous prime is 79630217. The next prime is 79630247. The reversal of 79630231 is 13203697.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79630231 is a prime.

It is a super-2 number, since 2×79630231² = 12681947378226722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79630193 and 79630202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79630211) 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 3 ways as a sum of consecutive naturals, for example, 25251 + ... + 28228.

It is an arithmetic number, because the mean of its divisors is an integer number (19921300).

Almost surely, 2^79630231 is an apocalyptic number.

79630231 is a deficient number, since it is larger than the sum of its proper divisors (54969).

79630231 is a wasteful number, since it uses less digits than its factorization.

79630231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54968.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 79630231 is about 8923.5772535458. The cubic root of 79630231 is about 430.2220432449. Note that the first 3 decimals are identical.

The spelling of 79630231 in words is "seventy-nine million, six hundred thirty thousand, two hundred thirty-one".