79730091 has 12 divisors (see below), whose sum is σ = 131618032. Its totient is φ = 45560016.

The previous prime is 79730083. The next prime is 79730113. The reversal of 79730091 is 19003797.

It is not a de Polignac number, because 79730091 - 2³ = 79730083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79730011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 632716 + ... + 632841.

Almost surely, 2^79730091 is an apocalyptic number.

79730091 is a deficient number, since it is larger than the sum of its proper divisors (51887941).

79730091 is a wasteful number, since it uses less digits than its factorization.

79730091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265570 (or 1265567 counting only the distinct ones).

The product of its (nonzero) digits is 11907, while the sum is 36.

The square root of 79730091 is about 8929.1707901686. The cubic root of 79730091 is about 430.4018075816.

The spelling of 79730091 in words is "seventy-nine million, seven hundred thirty thousand, ninety-one".