79774739 has 6 divisors (see below), whose sum is σ = 87059316. Its totient is φ = 72495560.

The previous prime is 79774729. The next prime is 79774777. The reversal of 79774739 is 93747797.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-79774739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79774729) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28277 + ... + 30969.

It is an arithmetic number, because the mean of its divisors is an integer number (14509886).

Almost surely, 2^79774739 is an apocalyptic number.

79774739 is a deficient number, since it is larger than the sum of its proper divisors (7284577).

79774739 is an frugal number, since it uses more digits than its factorization.

79774739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5397 (or 2704 counting only the distinct ones).

The product of its digits is 2333772, while the sum is 53.

The square root of 79774739 is about 8931.6705604271. The cubic root of 79774739 is about 430.4821327292.

The spelling of 79774739 in words is "seventy-nine million, seven hundred seventy-four thousand, seven hundred thirty-nine".