23994439 has 4 divisors (see below), whose sum is σ = 27422224. Its totient is φ = 20566656.

The previous prime is 23994437. The next prime is 23994449. The reversal of 23994439 is 93449932.

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 23994439 - 2¹ = 23994437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23994395 and 23994404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23994431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1713882 + ... + 1713895.

It is an arithmetic number, because the mean of its divisors is an integer number (6855556).

Almost surely, 2^23994439 is an apocalyptic number.

23994439 is a deficient number, since it is larger than the sum of its proper divisors (3427785).

23994439 is an equidigital number, since it uses as much as digits as its factorization.

23994439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3427784.

The product of its digits is 209952, while the sum is 43.

The square root of 23994439 is about 4898.4118854992. The cubic root of 23994439 is about 288.4276335909.

The spelling of 23994439 in words is "twenty-three million, nine hundred ninety-four thousand, four hundred thirty-nine".