23949943 has 4 divisors (see below), whose sum is σ = 23959800. Its totient is φ = 23940088.

The previous prime is 23949941. The next prime is 23949973. The reversal of 23949943 is 34994932.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 23949943 - 2¹ = 23949941 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23949943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23949941) 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, 1596 + ... + 7102.

It is an arithmetic number, because the mean of its divisors is an integer number (5989950).

Almost surely, 2^23949943 is an apocalyptic number.

23949943 is a deficient number, since it is larger than the sum of its proper divisors (9857).

23949943 is an equidigital number, since it uses as much as digits as its factorization.

23949943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9856.

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

The square root of 23949943 is about 4893.8678976858. The cubic root of 23949943 is about 288.2492336800.

The spelling of 23949943 in words is "twenty-three million, nine hundred forty-nine thousand, nine hundred forty-three".