22299989 has 4 divisors (see below), whose sum is σ = 22309824. Its totient is φ = 22290156.

The previous prime is 22299961. The next prime is 22300001. The reversal of 22299989 is 98999222.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22299989 - 2²⁰ = 21251413 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 (22299919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404 + ... + 6690.

It is an arithmetic number, because the mean of its divisors is an integer number (5577456).

Almost surely, 2^22299989 is an apocalyptic number.

It is an amenable number.

22299989 is a deficient number, since it is larger than the sum of its proper divisors (9835).

22299989 is an equidigital number, since it uses as much as digits as its factorization.

22299989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9834.

The product of its digits is 419904, while the sum is 50.

The square root of 22299989 is about 4722.2864165571. The cubic root of 22299989 is about 281.4717951523.

The spelling of 22299989 in words is "twenty-two million, two hundred ninety-nine thousand, nine hundred eighty-nine".