79734721 has 16 divisors (see below), whose sum is σ = 91601280. Its totient is φ = 68696320.

The previous prime is 79734719. The next prime is 79734731. The reversal of 79734721 is 12743797.

It is not a de Polignac number, because 79734721 - 2¹ = 79734719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79734731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27195 + ... + 29983.

It is an arithmetic number, because the mean of its divisors is an integer number (5725080).

Almost surely, 2^79734721 is an apocalyptic number.

It is an amenable number.

79734721 is a deficient number, since it is larger than the sum of its proper divisors (11866559).

79734721 is a wasteful number, since it uses less digits than its factorization.

79734721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2936.

The product of its digits is 74088, while the sum is 40.

The square root of 79734721 is about 8929.4300490009. The cubic root of 79734721 is about 430.4101386971.

The spelling of 79734721 in words is "seventy-nine million, seven hundred thirty-four thousand, seven hundred twenty-one".