79634091 has 4 divisors (see below), whose sum is σ = 106178792. Its totient is φ = 53089392.

The previous prime is 79634089. The next prime is 79634131. The reversal of 79634091 is 19043697.

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

It is not a de Polignac number, because 79634091 - 2¹ = 79634089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79633091) 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, 13272346 + ... + 13272351.

It is an arithmetic number, because the mean of its divisors is an integer number (26544698).

Almost surely, 2^79634091 is an apocalyptic number.

79634091 is a deficient number, since it is larger than the sum of its proper divisors (26544701).

79634091 is a wasteful number, since it uses less digits than its factorization.

79634091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26544700.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 79634091 is about 8923.7935319011. The cubic root of 79634091 is about 430.2289946678.

The spelling of 79634091 in words is "seventy-nine million, six hundred thirty-four thousand, ninety-one".