23989743 has 16 divisors (see below), whose sum is σ = 36368640. Its totient is φ = 15620472.

The previous prime is 23989729. The next prime is 23989751. The reversal of 23989743 is 34798932.

It is a happy number.

It is not a de Polignac number, because 23989743 - 2⁵ = 23989711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23989783) 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, 9171 + ... + 11492.

It is an arithmetic number, because the mean of its divisors is an integer number (2273040).

Almost surely, 2^23989743 is an apocalyptic number.

23989743 is a deficient number, since it is larger than the sum of its proper divisors (12378897).

23989743 is a wasteful number, since it uses less digits than its factorization.

23989743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20715 (or 20709 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 23989743 is about 4897.9325230142. The cubic root of 23989743 is about 288.4088161122.

The spelling of 23989743 in words is "twenty-three million, nine hundred eighty-nine thousand, seven hundred forty-three".