79451491 has 10 divisors (see below), whose sum is σ = 92690692. Its totient is φ = 68099220.

The previous prime is 79451473. The next prime is 79451513. The reversal of 79451491 is 19415497.

It is not a de Polignac number, because 79451491 - 2⁷ = 79451363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79451431) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 14145 + ... + 18946.

Almost surely, 2^79451491 is an apocalyptic number.

79451491 is a deficient number, since it is larger than the sum of its proper divisors (13239201).

79451491 is an frugal number, since it uses more digits than its factorization.

79451491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33119 (or 33098 counting only the distinct ones).

The product of its digits is 45360, while the sum is 40.

The square root of 79451491 is about 8913.5565853367. The cubic root of 79451491 is about 429.8999063942.

The spelling of 79451491 in words is "seventy-nine million, four hundred fifty-one thousand, four hundred ninety-one".