23924993 has 4 divisors (see below), whose sum is σ = 24317268. Its totient is φ = 23532720.

The previous prime is 23924987. The next prime is 23925007. The reversal of 23924993 is 39942932.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11336689 + 12588304 = 3367^2 + 3548^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23924993 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23924993.

It is not an unprimeable number, because it can be changed into a prime (23924983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196046 + ... + 196167.

It is an arithmetic number, because the mean of its divisors is an integer number (6079317).

Almost surely, 2^23924993 is an apocalyptic number.

It is an amenable number.

23924993 is a deficient number, since it is larger than the sum of its proper divisors (392275).

23924993 is an equidigital number, since it uses as much as digits as its factorization.

23924993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392274.

The product of its digits is 104976, while the sum is 41.

The square root of 23924993 is about 4891.3181250048. The cubic root of 23924993 is about 288.1491037660.

The spelling of 23924993 in words is "twenty-three million, nine hundred twenty-four thousand, nine hundred ninety-three".