22991339 has 12 divisors (see below), whose sum is σ = 26823744. Its totient is φ = 19648944.

The previous prime is 22991333. The next prime is 22991357. The reversal of 22991339 is 93319922.

It is not a de Polignac number, because 22991339 - 2⁴ = 22991323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22991333) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29357 + ... + 30129.

It is an arithmetic number, because the mean of its divisors is an integer number (2235312).

Almost surely, 2^22991339 is an apocalyptic number.

22991339 is a deficient number, since it is larger than the sum of its proper divisors (3832405).

22991339 is an equidigital number, since it uses as much as digits as its factorization.

22991339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1394 (or 1387 counting only the distinct ones).

The product of its digits is 26244, while the sum is 38.

The square root of 22991339 is about 4794.9284666197. The cubic root of 22991339 is about 284.3509967906.

The spelling of 22991339 in words is "twenty-two million, nine hundred ninety-one thousand, three hundred thirty-nine".