22949209 has 4 divisors (see below), whose sum is σ = 22981504. Its totient is φ = 22916916.

The previous prime is 22949203. The next prime is 22949219. The reversal of 22949209 is 90294922.

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 22949209 - 2⁵ = 22949177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22949203) 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, 15057 + ... + 16510.

It is an arithmetic number, because the mean of its divisors is an integer number (5745376).

Almost surely, 2^22949209 is an apocalyptic number.

It is an amenable number.

22949209 is a deficient number, since it is larger than the sum of its proper divisors (32295).

22949209 is an equidigital number, since it uses as much as digits as its factorization.

22949209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32294.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 22949209 is about 4790.5332688543. The cubic root of 22949209 is about 284.1772062417.

The spelling of 22949209 in words is "twenty-two million, nine hundred forty-nine thousand, two hundred nine".