23943493 has 4 divisors (see below), whose sum is σ = 27364000. Its totient is φ = 20522988.

The previous prime is 23943487. The next prime is 23943503. The reversal of 23943493 is 39434932.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23943493 - 2⁵ = 23943461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23943433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1710243 + ... + 1710256.

It is an arithmetic number, because the mean of its divisors is an integer number (6841000).

Almost surely, 2^23943493 is an apocalyptic number.

It is an amenable number.

23943493 is a deficient number, since it is larger than the sum of its proper divisors (3420507).

23943493 is an equidigital number, since it uses as much as digits as its factorization.

23943493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3420506.

The product of its digits is 69984, while the sum is 37.

The square root of 23943493 is about 4893.2088653561. The cubic root of 23943493 is about 288.2233550591.

The spelling of 23943493 in words is "twenty-three million, nine hundred forty-three thousand, four hundred ninety-three".