23942689 has 2 divisors, whose sum is σ = 23942690. Its totient is φ = 23942688.

The previous prime is 23942669. The next prime is 23942741. The reversal of 23942689 is 98624932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23931664 + 11025 = 4892^2 + 105^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23942689 is a prime.

It is not a weakly prime, because it can be changed into another prime (23942669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11971344 + 11971345.

It is an arithmetic number, because the mean of its divisors is an integer number (11971345).

Almost surely, 2^23942689 is an apocalyptic number.

It is an amenable number.

23942689 is a deficient number, since it is larger than the sum of its proper divisors (1).

23942689 is an equidigital number, since it uses as much as digits as its factorization.

23942689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 43.

The square root of 23942689 is about 4893.1267099882. The cubic root of 23942689 is about 288.2201289332.

The spelling of 23942689 in words is "twenty-three million, nine hundred forty-two thousand, six hundred eighty-nine".