23402749 has 2 divisors, whose sum is σ = 23402750. Its totient is φ = 23402748.

The previous prime is 23402713. The next prime is 23402767. The reversal of 23402749 is 94720432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18429849 + 4972900 = 4293^2 + 2230^2 .

It is a cyclic number.

It is not a de Polignac number, because 23402749 - 2¹¹ = 23400701 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23402749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23402779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11701374 + 11701375.

It is an arithmetic number, because the mean of its divisors is an integer number (11701375).

Almost surely, 2^23402749 is an apocalyptic number.

It is an amenable number.

23402749 is a deficient number, since it is larger than the sum of its proper divisors (1).

23402749 is an equidigital number, since it uses as much as digits as its factorization.

23402749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 23402749 is about 4837.6387835389. The cubic root of 23402749 is about 286.0370508017.

The spelling of 23402749 in words is "twenty-three million, four hundred two thousand, seven hundred forty-nine".