23402689 has 2 divisors, whose sum is σ = 23402690. Its totient is φ = 23402688.

The previous prime is 23402647. The next prime is 23402713. The reversal of 23402689 is 98620432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22467600 + 935089 = 4740^2 + 967^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23402689 is a prime.

It is not a weakly prime, because it can be changed into another prime (23402189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11701344 + 11701345.

It is an arithmetic number, because the mean of its divisors is an integer number (11701345).

Almost surely, 2^23402689 is an apocalyptic number.

It is an amenable number.

23402689 is a deficient number, since it is larger than the sum of its proper divisors (1).

23402689 is an equidigital number, since it uses as much as digits as its factorization.

23402689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 23402689 is about 4837.6325821625. The cubic root of 23402689 is about 286.0368063541.

The spelling of 23402689 in words is "twenty-three million, four hundred two thousand, six hundred eighty-nine".