22429923 has 4 divisors (see below), whose sum is σ = 29906568. Its totient is φ = 14953280.

The previous prime is 22429909. The next prime is 22429931. The reversal of 22429923 is 32992422.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22429923 - 2⁶ = 22429859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22429903) 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, 3738318 + ... + 3738323.

It is an arithmetic number, because the mean of its divisors is an integer number (7476642).

Almost surely, 2^22429923 is an apocalyptic number.

22429923 is a deficient number, since it is larger than the sum of its proper divisors (7476645).

22429923 is an equidigital number, since it uses as much as digits as its factorization.

22429923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7476644.

The product of its digits is 15552, while the sum is 33.

The square root of 22429923 is about 4736.0239653110. The cubic root of 22429923 is about 282.0174150505.

The spelling of 22429923 in words is "twenty-two million, four hundred twenty-nine thousand, nine hundred twenty-three".