23440861 has 2 divisors, whose sum is σ = 23440862. Its totient is φ = 23440860.

The previous prime is 23440853. The next prime is 23440871. The reversal of 23440861 is 16804432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23088025 + 352836 = 4805^2 + 594^2 .

It is a cyclic number.

It is not a de Polignac number, because 23440861 - 2³ = 23440853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23440871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11720430 + 11720431.

It is an arithmetic number, because the mean of its divisors is an integer number (11720431).

Almost surely, 2^23440861 is an apocalyptic number.

It is an amenable number.

23440861 is a deficient number, since it is larger than the sum of its proper divisors (1).

23440861 is an equidigital number, since it uses as much as digits as its factorization.

23440861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 23440861 is about 4841.5762929030. The cubic root of 23440861 is about 286.1922395741.

The spelling of 23440861 in words is "twenty-three million, four hundred forty thousand, eight hundred sixty-one".