22138759 has 2 divisors, whose sum is σ = 22138760. Its totient is φ = 22138758.

The previous prime is 22138757. The next prime is 22138763. The reversal of 22138759 is 95783122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22138759 - 2¹ = 22138757 is a prime.

Together with 22138757, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22138757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11069379 + 11069380.

It is an arithmetic number, because the mean of its divisors is an integer number (11069380).

Almost surely, 2^22138759 is an apocalyptic number.

22138759 is a deficient number, since it is larger than the sum of its proper divisors (1).

22138759 is an equidigital number, since it uses as much as digits as its factorization.

22138759 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 37.

The square root of 22138759 is about 4705.1842684426. The cubic root of 22138759 is about 280.7918021473.

The spelling of 22138759 in words is "twenty-two million, one hundred thirty-eight thousand, seven hundred fifty-nine".