22791199 has 2 divisors, whose sum is σ = 22791200. Its totient is φ = 22791198.

The previous prime is 22791191. The next prime is 22791211. The reversal of 22791199 is 99119722.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22791199 - 2³ = 22791191 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 (22791191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11395599 + 11395600.

It is an arithmetic number, because the mean of its divisors is an integer number (11395600).

Almost surely, 2^22791199 is an apocalyptic number.

22791199 is a deficient number, since it is larger than the sum of its proper divisors (1).

22791199 is an equidigital number, since it uses as much as digits as its factorization.

22791199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 40.

The square root of 22791199 is about 4774.0128822616. The cubic root of 22791199 is about 283.5234975604.

The spelling of 22791199 in words is "twenty-two million, seven hundred ninety-one thousand, one hundred ninety-nine".