22990291 has 2 divisors, whose sum is σ = 22990292. Its totient is φ = 22990290.

The previous prime is 22990277. The next prime is 22990339. The reversal of 22990291 is 19209922.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22990291 - 2¹¹ = 22988243 is a prime.

It is not a weakly prime, because it can be changed into another prime (22990211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11495145 + 11495146.

It is an arithmetic number, because the mean of its divisors is an integer number (11495146).

Almost surely, 2^22990291 is an apocalyptic number.

22990291 is a deficient number, since it is larger than the sum of its proper divisors (1).

22990291 is an equidigital number, since it uses as much as digits as its factorization.

22990291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 22990291 is about 4794.8191832435. The cubic root of 22990291 is about 284.3466762597.

The spelling of 22990291 in words is "twenty-two million, nine hundred ninety thousand, two hundred ninety-one".