22364989 has 4 divisors (see below), whose sum is σ = 22412160. Its totient is φ = 22317820.

The previous prime is 22364987. The next prime is 22365017. The reversal of 22364989 is 98946322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22364989 - 2¹ = 22364987 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 (22364987) 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 in 3 ways as a sum of consecutive naturals, for example, 22867 + ... + 23824.

It is an arithmetic number, because the mean of its divisors is an integer number (5603040).

Almost surely, 2^22364989 is an apocalyptic number.

It is an amenable number.

22364989 is a deficient number, since it is larger than the sum of its proper divisors (47171).

22364989 is an equidigital number, since it uses as much as digits as its factorization.

22364989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47170.

The product of its digits is 186624, while the sum is 43.

The square root of 22364989 is about 4729.1636681341. The cubic root of 22364989 is about 281.7450078333.

It can be divided in two parts, 2236 and 4989, that added together give a square (7225 = 85²).

The spelling of 22364989 in words is "twenty-two million, three hundred sixty-four thousand, nine hundred eighty-nine".