22990789 has 4 divisors (see below), whose sum is σ = 23064556. Its totient is φ = 22917024.

The previous prime is 22990763. The next prime is 22990811. The reversal of 22990789 is 98709922.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5560164 + 17430625 = 2358^2 + 4175^2 .

It is a cyclic number.

It is not a de Polignac number, because 22990789 - 2⁵ = 22990757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22990889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36414 + ... + 37039.

It is an arithmetic number, because the mean of its divisors is an integer number (5766139).

Almost surely, 2^22990789 is an apocalyptic number.

It is an amenable number.

22990789 is a deficient number, since it is larger than the sum of its proper divisors (73767).

22990789 is an equidigital number, since it uses as much as digits as its factorization.

22990789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73766.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 22990789 is about 4794.8711140134. The cubic root of 22990789 is about 284.3487293528.

The spelling of 22990789 in words is "twenty-two million, nine hundred ninety thousand, seven hundred eighty-nine".