79231491 has 12 divisors (see below), whose sum is σ = 114686832. Its totient is φ = 52709616.

The previous prime is 79231489. The next prime is 79231517. The reversal of 79231491 is 19413297.

It is not a de Polignac number, because 79231491 - 2¹ = 79231489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79231421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4656 + ... + 13421.

It is an arithmetic number, because the mean of its divisors is an integer number (9557236).

Almost surely, 2^79231491 is an apocalyptic number.

79231491 is a deficient number, since it is larger than the sum of its proper divisors (35455341).

79231491 is a wasteful number, since it uses less digits than its factorization.

79231491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18570 (or 18567 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 79231491 is about 8901.2072776675. The cubic root of 79231491 is about 429.5027441016.

The spelling of 79231491 in words is "seventy-nine million, two hundred thirty-one thousand, four hundred ninety-one".