23894439 has 4 divisors (see below), whose sum is σ = 31859256. Its totient is φ = 15929624.

The previous prime is 23894417. The next prime is 23894449. The reversal of 23894439 is 93449832.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 23894439 - 2⁵ = 23894407 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23894439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23894449) 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, 3982404 + ... + 3982409.

It is an arithmetic number, because the mean of its divisors is an integer number (7964814).

Almost surely, 2^23894439 is an apocalyptic number.

23894439 is a deficient number, since it is larger than the sum of its proper divisors (7964817).

23894439 is an equidigital number, since it uses as much as digits as its factorization.

23894439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7964816.

The product of its digits is 186624, while the sum is 42.

The square root of 23894439 is about 4888.1938382188. The cubic root of 23894439 is about 288.0263888821.

The spelling of 23894439 in words is "twenty-three million, eight hundred ninety-four thousand, four hundred thirty-nine".