23932921 has 2 divisors, whose sum is σ = 23932922. Its totient is φ = 23932920.

The previous prime is 23932879. The next prime is 23932927. The reversal of 23932921 is 12923932.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23863225 + 69696 = 4885^2 + 264^2 .

It is a cyclic number.

It is not a de Polignac number, because 23932921 - 2¹⁵ = 23900153 is a prime.

It is not a weakly prime, because it can be changed into another prime (23932927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11966460 + 11966461.

It is an arithmetic number, because the mean of its divisors is an integer number (11966461).

Almost surely, 2^23932921 is an apocalyptic number.

It is an amenable number.

23932921 is a deficient number, since it is larger than the sum of its proper divisors (1).

23932921 is an equidigital number, since it uses as much as digits as its factorization.

23932921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5832, while the sum is 31.

The square root of 23932921 is about 4892.1284733743. The cubic root of 23932921 is about 288.1809281404.

The spelling of 23932921 in words is "twenty-three million, nine hundred thirty-two thousand, nine hundred twenty-one".