722393937 has 48 divisors (see below), whose sum is σ = 1163849280. Its totient is φ = 442520064.

The previous prime is 722393891. The next prime is 722393941. The reversal of 722393937 is 739393227.

It is not a de Polignac number, because 722393937 - 2⁶ = 722393873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 722393892 and 722393901.

It is not an unprimeable number, because it can be changed into a prime (722393237) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 334453 + ... + 336605.

It is an arithmetic number, because the mean of its divisors is an integer number (24246860).

Almost surely, 2^722393937 is an apocalyptic number.

It is an amenable number.

722393937 is a deficient number, since it is larger than the sum of its proper divisors (441455343).

722393937 is a wasteful number, since it uses less digits than its factorization.

722393937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2239 (or 2216 counting only the distinct ones).

The product of its digits is 428652, while the sum is 45.

The square root of 722393937 is about 26877.3870939866. The cubic root of 722393937 is about 897.2732023151.

It can be divided in two parts, 72239 and 3937, that added together give a square (76176 = 276²).

The spelling of 722393937 in words is "seven hundred twenty-two million, three hundred ninety-three thousand, nine hundred thirty-seven".