22492489 has 2 divisors, whose sum is σ = 22492490. Its totient is φ = 22492488.

The previous prime is 22492433. The next prime is 22492499. The reversal of 22492489 is 98429422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19713600 + 2778889 = 4440^2 + 1667^2 .

It is a cyclic number.

It is not a de Polignac number, because 22492489 - 2¹⁵ = 22459721 is a prime.

It is a super-2 number, since 2×22492489² = 1011824122830242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22492499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11246244 + 11246245.

It is an arithmetic number, because the mean of its divisors is an integer number (11246245).

Almost surely, 2^22492489 is an apocalyptic number.

It is an amenable number.

22492489 is a deficient number, since it is larger than the sum of its proper divisors (1).

22492489 is an equidigital number, since it uses as much as digits as its factorization.

22492489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 40.

The square root of 22492489 is about 4742.6246952505. The cubic root of 22492489 is about 282.2793912943.

The spelling of 22492489 in words is "twenty-two million, four hundred ninety-two thousand, four hundred eighty-nine".