23909955 has 32 divisors (see below), whose sum is σ = 39938304. Its totient is φ = 12203136.

The previous prime is 23909947. The next prime is 23909957. The reversal of 23909955 is 55990932.

It is not a de Polignac number, because 23909955 - 2³ = 23909947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23909957) 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 31 ways as a sum of consecutive naturals, for example, 36864 + ... + 37506.

It is an arithmetic number, because the mean of its divisors is an integer number (1248072).

Almost surely, 2^23909955 is an apocalyptic number.

23909955 is a deficient number, since it is larger than the sum of its proper divisors (16028349).

23909955 is a wasteful number, since it uses less digits than its factorization.

23909955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755.

The product of its (nonzero) digits is 109350, while the sum is 42.

The square root of 23909955 is about 4889.7806699278. The cubic root of 23909955 is about 288.0887192912.

The spelling of 23909955 in words is "twenty-three million, nine hundred nine thousand, nine hundred fifty-five".