23439913 has 8 divisors (see below), whose sum is σ = 26820032. Its totient is φ = 20067696.

The previous prime is 23439893. The next prime is 23439919. The reversal of 23439913 is 31993432.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23439913 - 2¹³ = 23431721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23439919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7306 + ... + 10012.

It is an arithmetic number, because the mean of its divisors is an integer number (3352504).

Almost surely, 2^23439913 is an apocalyptic number.

It is an amenable number.

23439913 is a deficient number, since it is larger than the sum of its proper divisors (3380119).

23439913 is a wasteful number, since it uses less digits than its factorization.

23439913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3951.

The product of its digits is 17496, while the sum is 34.

The square root of 23439913 is about 4841.4783899136. The cubic root of 23439913 is about 286.1883814407.

The spelling of 23439913 in words is "twenty-three million, four hundred thirty-nine thousand, nine hundred thirteen".