22457839 has 2 divisors, whose sum is σ = 22457840. Its totient is φ = 22457838.

The previous prime is 22457807. The next prime is 22457843. The reversal of 22457839 is 93875422.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22457839 - 2⁵ = 22457807 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22457879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11228919 + 11228920.

It is an arithmetic number, because the mean of its divisors is an integer number (11228920).

Almost surely, 2^22457839 is an apocalyptic number.

22457839 is a deficient number, since it is larger than the sum of its proper divisors (1).

22457839 is an equidigital number, since it uses as much as digits as its factorization.

22457839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 40.

The square root of 22457839 is about 4738.9702467941. The cubic root of 22457839 is about 282.1343649881.

The spelling of 22457839 in words is "twenty-two million, four hundred fifty-seven thousand, eight hundred thirty-nine".