22900091 has 2 divisors, whose sum is σ = 22900092. Its totient is φ = 22900090.

The previous prime is 22900079. The next prime is 22900109. The reversal of 22900091 is 19000922.

Together with next prime (22900109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22900091 - 2¹⁸ = 22637947 is a prime.

It is not a weakly prime, because it can be changed into another prime (22900021) 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, 11450045 + 11450046.

It is an arithmetic number, because the mean of its divisors is an integer number (11450046).

Almost surely, 2^22900091 is an apocalyptic number.

22900091 is a deficient number, since it is larger than the sum of its proper divisors (1).

22900091 is an equidigital number, since it uses as much as digits as its factorization.

22900091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 22900091 is about 4785.4039536908. The cubic root of 22900091 is about 283.9743207291.

The spelling of 22900091 in words is "twenty-two million, nine hundred thousand, ninety-one".