22955909 has 4 divisors (see below), whose sum is σ = 23954016. Its totient is φ = 21957804.

The previous prime is 22955893. The next prime is 22955917. The reversal of 22955909 is 90955922.

It is a happy number.

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 22955909 - 2⁴ = 22955893 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 (22955929) 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, 499019 + ... + 499064.

It is an arithmetic number, because the mean of its divisors is an integer number (5988504).

Almost surely, 2^22955909 is an apocalyptic number.

It is an amenable number.

22955909 is a deficient number, since it is larger than the sum of its proper divisors (998107).

22955909 is an equidigital number, since it uses as much as digits as its factorization.

22955909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998106.

The product of its (nonzero) digits is 72900, while the sum is 41.

The square root of 22955909 is about 4791.2325136649. The cubic root of 22955909 is about 284.2048586403.

The spelling of 22955909 in words is "twenty-two million, nine hundred fifty-five thousand, nine hundred nine".