22158839 has 2 divisors, whose sum is σ = 22158840. Its totient is φ = 22158838.

The previous prime is 22158809. The next prime is 22158881. The reversal of 22158839 is 93885122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22158839 - 2²⁰ = 21110263 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22158809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11079419 + 11079420.

It is an arithmetic number, because the mean of its divisors is an integer number (11079420).

Almost surely, 2^22158839 is an apocalyptic number.

22158839 is a deficient number, since it is larger than the sum of its proper divisors (1).

22158839 is an equidigital number, since it uses as much as digits as its factorization.

22158839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 38.

The square root of 22158839 is about 4707.3176013522. The cubic root of 22158839 is about 280.8766698310.

The spelling of 22158839 in words is "twenty-two million, one hundred fifty-eight thousand, eight hundred thirty-nine".