23922091 has 4 divisors (see below), whose sum is σ = 24568672. Its totient is φ = 23275512.

The previous prime is 23922089. The next prime is 23922103. The reversal of 23922091 is 19022932.

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 23922091 - 2¹ = 23922089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23922191) 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, 323235 + ... + 323308.

It is an arithmetic number, because the mean of its divisors is an integer number (6142168).

Almost surely, 2^23922091 is an apocalyptic number.

23922091 is a deficient number, since it is larger than the sum of its proper divisors (646581).

23922091 is an equidigital number, since it uses as much as digits as its factorization.

23922091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646580.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 23922091 is about 4891.0214679553. The cubic root of 23922091 is about 288.1374528742.

The spelling of 23922091 in words is "twenty-three million, nine hundred twenty-two thousand, ninety-one".