722309979 has 16 divisors (see below), whose sum is σ = 969494400. Its totient is φ = 478344000.

The previous prime is 722309953. The next prime is 722309981. The reversal of 722309979 is 979903227.

It is not a de Polignac number, because 722309979 - 2²⁵ = 688755547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (722307979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 343072 + ... + 345170.

It is an arithmetic number, because the mean of its divisors is an integer number (60593400).

Almost surely, 2^722309979 is an apocalyptic number.

722309979 is a deficient number, since it is larger than the sum of its proper divisors (247184421).

722309979 is a wasteful number, since it uses less digits than its factorization.

722309979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2810.

The product of its (nonzero) digits is 428652, while the sum is 48.

The square root of 722309979 is about 26875.8251780294. The cubic root of 722309979 is about 897.2384400345.

The spelling of 722309979 in words is "seven hundred twenty-two million, three hundred nine thousand, nine hundred seventy-nine".