23440973 has 2 divisors, whose sum is σ = 23440974. Its totient is φ = 23440972.

The previous prime is 23440969. The next prime is 23440987. The reversal of 23440973 is 37904432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17280649 + 6160324 = 4157^2 + 2482^2 .

It is a cyclic number.

It is not a de Polignac number, because 23440973 - 2² = 23440969 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23440913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11720486 + 11720487.

It is an arithmetic number, because the mean of its divisors is an integer number (11720487).

Almost surely, 2^23440973 is an apocalyptic number.

It is an amenable number.

23440973 is a deficient number, since it is larger than the sum of its proper divisors (1).

23440973 is an equidigital number, since it uses as much as digits as its factorization.

23440973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 23440973 is about 4841.5878593701. The cubic root of 23440973 is about 286.1926953804.

The spelling of 23440973 in words is "twenty-three million, four hundred forty thousand, nine hundred seventy-three".