22090493 has 2 divisors, whose sum is σ = 22090494. Its totient is φ = 22090492.

The previous prime is 22090469. The next prime is 22090553. The reversal of 22090493 is 39409022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21362884 + 727609 = 4622^2 + 853^2 .

It is a cyclic number.

It is not a de Polignac number, because 22090493 - 2¹⁸ = 21828349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22090093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11045246 + 11045247.

It is an arithmetic number, because the mean of its divisors is an integer number (11045247).

Almost surely, 2^22090493 is an apocalyptic number.

It is an amenable number.

22090493 is a deficient number, since it is larger than the sum of its proper divisors (1).

22090493 is an equidigital number, since it uses as much as digits as its factorization.

22090493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 22090493 is about 4700.0524465159. The cubic root of 22090493 is about 280.5875968125.

The spelling of 22090493 in words is "twenty-two million, ninety thousand, four hundred ninety-three".