22992391 has 2 divisors, whose sum is σ = 22992392. Its totient is φ = 22992390.

The previous prime is 22992383. The next prime is 22992443. The reversal of 22992391 is 19329922.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22992391 - 2³ = 22992383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22992391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22992311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11496195 + 11496196.

It is an arithmetic number, because the mean of its divisors is an integer number (11496196).

Almost surely, 2^22992391 is an apocalyptic number.

22992391 is a deficient number, since it is larger than the sum of its proper divisors (1).

22992391 is an equidigital number, since it uses as much as digits as its factorization.

22992391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17496, while the sum is 37.

The square root of 22992391 is about 4795.0381646031. The cubic root of 22992391 is about 284.3553336800.

The spelling of 22992391 in words is "twenty-two million, nine hundred ninety-two thousand, three hundred ninety-one".