722722839 has 4 divisors (see below), whose sum is σ = 963630456. Its totient is φ = 481815224.

The previous prime is 722722829. The next prime is 722722843. The reversal of 722722839 is 938227227.

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

It is a cyclic number.

It is not a de Polignac number, because 722722839 - 2⁴ = 722722823 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 722722839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722722829) 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, 120453804 + ... + 120453809.

It is an arithmetic number, because the mean of its divisors is an integer number (240907614).

Almost surely, 2^722722839 is an apocalyptic number.

722722839 is a deficient number, since it is larger than the sum of its proper divisors (240907617).

722722839 is a wasteful number, since it uses less digits than its factorization.

722722839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240907616.

The product of its digits is 169344, while the sum is 42.

The square root of 722722839 is about 26883.5049612211. The cubic root of 722722839 is about 897.4093561775.

The spelling of 722722839 in words is "seven hundred twenty-two million, seven hundred twenty-two thousand, eight hundred thirty-nine".