22222949 has 4 divisors (see below), whose sum is σ = 25397664. Its totient is φ = 19048236.

The previous prime is 22222909. The next prime is 22222957. The reversal of 22222949 is 94922222.

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 22222949 - 2¹² = 22218853 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 (22222909) 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, 1587347 + ... + 1587360.

It is an arithmetic number, because the mean of its divisors is an integer number (6349416).

Almost surely, 2^22222949 is an apocalyptic number.

It is an amenable number.

22222949 is a deficient number, since it is larger than the sum of its proper divisors (3174715).

22222949 is an equidigital number, since it uses as much as digits as its factorization.

22222949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3174714.

The product of its digits is 10368, while the sum is 32.

The square root of 22222949 is about 4714.1222937043. The cubic root of 22222949 is about 281.1472866744.

The spelling of 22222949 in words is "twenty-two million, two hundred twenty-two thousand, nine hundred forty-nine".