23442889 has 2 divisors, whose sum is σ = 23442890.
Its totient is φ = 23442888.
The previous prime is 23442877. The next prime is 23442893. The reversal of 23442889 is 98824432.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 22014864 + 1428025 = 4692^2 + 1195^2
It is a cyclic number.
It is not a de Polignac number, because 23442889 - 217 = 23311817 is a prime.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (23442899) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11721444 + 11721445.
It is an arithmetic number, because the mean of its divisors is an integer number (11721445).
Almost surely, 223442889 is an apocalyptic number.
It is an amenable number.
23442889 is a deficient number, since it is larger than the sum of its proper divisors (1).
23442889 is an equidigital number, since it uses as much as digits as its factorization.
23442889 is an evil number, because the sum of its binary digits is even.
The product of its digits is 110592, while the sum is 40.
The square root of 23442889 is about 4841.7857242964.
The cubic root of 23442889 is about 286.2004926999.
The spelling of 23442889 in words is "twenty-three million, four hundred forty-two thousand, eight hundred eighty-nine".