22749939 has 24 divisors (see below), whose sum is σ = 34416512. Its totient is φ = 14463360.

The previous prime is 22749929. The next prime is 22749941. The reversal of 22749939 is 93994722.

It is not a de Polignac number, because 22749939 - 2⁵ = 22749907 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22749894 and 22749903.

It is not an unprimeable number, because it can be changed into a prime (22749929) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19809 + ... + 20925.

Almost surely, 2^22749939 is an apocalyptic number.

22749939 is a deficient number, since it is larger than the sum of its proper divisors (11666573).

22749939 is a wasteful number, since it uses less digits than its factorization.

22749939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227 (or 1224 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 22749939 is about 4769.6896125429. The cubic root of 22749939 is about 283.3523021518.

The spelling of 22749939 in words is "twenty-two million, seven hundred forty-nine thousand, nine hundred thirty-nine".