23900491 has 2 divisors, whose sum is σ = 23900492. Its totient is φ = 23900490.

The previous prime is 23900489. The next prime is 23900531. The reversal of 23900491 is 19400932.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23900491 - 2¹ = 23900489 is a prime.

Together with 23900489, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23903491) 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 as a sum of consecutive naturals, namely, 11950245 + 11950246.

It is an arithmetic number, because the mean of its divisors is an integer number (11950246).

Almost surely, 2^23900491 is an apocalyptic number.

23900491 is a deficient number, since it is larger than the sum of its proper divisors (1).

23900491 is an equidigital number, since it uses as much as digits as its factorization.

23900491 is an odious number, because the sum of its binary digits is odd.

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

The square root of 23900491 is about 4888.8128415803. The cubic root of 23900491 is about 288.0507040036.

The spelling of 23900491 in words is "twenty-three million, nine hundred thousand, four hundred ninety-one".