79339591 has 4 divisors (see below), whose sum is σ = 80523832. Its totient is φ = 78155352.

The previous prime is 79339543. The next prime is 79339597. The reversal of 79339591 is 19593397.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19593397 = 541 ⋅36217.

It is a cyclic number.

It is not a de Polignac number, because 79339591 - 2¹¹ = 79337543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79339597) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 592020 + ... + 592153.

It is an arithmetic number, because the mean of its divisors is an integer number (20130958).

Almost surely, 2^79339591 is an apocalyptic number.

79339591 is a deficient number, since it is larger than the sum of its proper divisors (1184241).

79339591 is a wasteful number, since it uses less digits than its factorization.

79339591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184240.

The product of its digits is 229635, while the sum is 46.

The square root of 79339591 is about 8907.2774179319. The cubic root of 79339591 is about 429.6979869555.

The spelling of 79339591 in words is "seventy-nine million, three hundred thirty-nine thousand, five hundred ninety-one".