23963939 has 4 divisors (see below), whose sum is σ = 24267360. Its totient is φ = 23660520.

The previous prime is 23963923. The next prime is 23963941. The reversal of 23963939 is 93936932.

It is a happy number.

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 23963939 - 2⁴ = 23963923 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 23963939.

It is not an unprimeable number, because it can be changed into a prime (23963909) 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, 151592 + ... + 151749.

It is an arithmetic number, because the mean of its divisors is an integer number (6066840).

Almost surely, 2^23963939 is an apocalyptic number.

23963939 is a deficient number, since it is larger than the sum of its proper divisors (303421).

23963939 is an equidigital number, since it uses as much as digits as its factorization.

23963939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303420.

The product of its digits is 236196, while the sum is 44.

The square root of 23963939 is about 4895.2976416149. The cubic root of 23963939 is about 288.3053723057.

The spelling of 23963939 in words is "twenty-three million, nine hundred sixty-three thousand, nine hundred thirty-nine".