23001979 has 24 divisors (see below), whose sum is σ = 31132640. Its totient is φ = 16536960.

The previous prime is 23001977. The next prime is 23001983. The reversal of 23001979 is 97910032.

It is not a de Polignac number, because 23001979 - 2¹ = 23001977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23001979.

It is not an unprimeable number, because it can be changed into a prime (23001973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9967 + ... + 12055.

Almost surely, 2^23001979 is an apocalyptic number.

23001979 is a deficient number, since it is larger than the sum of its proper divisors (8130661).

23001979 is a wasteful number, since it uses less digits than its factorization.

23001979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2131 (or 2120 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 23001979 is about 4796.0378438874. The cubic root of 23001979 is about 284.3948542915.

The spelling of 23001979 in words is "twenty-three million, one thousand, nine hundred seventy-nine".