23923261439 has 16 divisors (see below), whose sum is σ = 29853847296. Its totient is φ = 18624350400.

The previous prime is 23923261337. The next prime is 23923261457. The reversal of 23923261439 is 93416232932.

It is a cyclic number.

It is not a de Polignac number, because 23923261439 - 2⁸ = 23923261183 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23923261439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23923261039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58382 + ... + 226395.

It is an arithmetic number, because the mean of its divisors is an integer number (1865865456).

Almost surely, 2^23923261439 is an apocalyptic number.

23923261439 is a deficient number, since it is larger than the sum of its proper divisors (5930585857).

23923261439 is a wasteful number, since it uses less digits than its factorization.

23923261439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285886.

The product of its digits is 419904, while the sum is 44.

The spelling of 23923261439 in words is "twenty-three billion, nine hundred twenty-three million, two hundred sixty-one thousand, four hundred thirty-nine".