23890943 has 4 divisors (see below), whose sum is σ = 24193440. Its totient is φ = 23588448.

The previous prime is 23890939. The next prime is 23890949. The reversal of 23890943 is 34909832.

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 23890943 - 2² = 23890939 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23890897 and 23890906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23890949) 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 in 3 ways as a sum of consecutive naturals, for example, 151130 + ... + 151287.

It is an arithmetic number, because the mean of its divisors is an integer number (6048360).

Almost surely, 2^23890943 is an apocalyptic number.

23890943 is a deficient number, since it is larger than the sum of its proper divisors (302497).

23890943 is an equidigital number, since it uses as much as digits as its factorization.

23890943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302496.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 23890943 is about 4887.8362288440. The cubic root of 23890943 is about 288.0123411314.

The spelling of 23890943 in words is "twenty-three million, eight hundred ninety thousand, nine hundred forty-three".