23938491 has 4 divisors (see below), whose sum is σ = 31917992. Its totient is φ = 15958992.

The previous prime is 23938477. The next prime is 23938493. The reversal of 23938491 is 19483932.

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

It is not a de Polignac number, because 23938491 - 2⁵ = 23938459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23938493) 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, 3989746 + ... + 3989751.

It is an arithmetic number, because the mean of its divisors is an integer number (7979498).

Almost surely, 2^23938491 is an apocalyptic number.

23938491 is a deficient number, since it is larger than the sum of its proper divisors (7979501).

23938491 is an equidigital number, since it uses as much as digits as its factorization.

23938491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7979500.

The product of its digits is 46656, while the sum is 39.

The square root of 23938491 is about 4892.6977221161. The cubic root of 23938491 is about 288.2032828885.

The spelling of 23938491 in words is "twenty-three million, nine hundred thirty-eight thousand, four hundred ninety-one".