23921983 has 8 divisors (see below), whose sum is σ = 24607296. Its totient is φ = 23241600.

The previous prime is 23921977. The next prime is 23921993. The reversal of 23921983 is 38912932.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23921983 is a prime.

It is a super-2 number, since 2×23921983² = 1144522541304578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23921923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10035 + ... + 12187.

It is an arithmetic number, because the mean of its divisors is an integer number (3075912).

Almost surely, 2^23921983 is an apocalyptic number.

23921983 is a deficient number, since it is larger than the sum of its proper divisors (685313).

23921983 is a wasteful number, since it uses less digits than its factorization.

23921983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2465.

The product of its digits is 23328, while the sum is 37.

The square root of 23921983 is about 4891.0104273044. The cubic root of 23921983 is about 288.1370192598.

It can be divided in two parts, 239 and 21983, that added together give a palindrome (22222).

The spelling of 23921983 in words is "twenty-three million, nine hundred twenty-one thousand, nine hundred eighty-three".