23022749 has 2 divisors, whose sum is σ = 23022750. Its totient is φ = 23022748.

The previous prime is 23022731. The next prime is 23022751. The reversal of 23022749 is 94722032.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18335524 + 4687225 = 4282^2 + 2165^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23022749 is a prime.

Together with 23022751, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23022719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11511374 + 11511375.

It is an arithmetic number, because the mean of its divisors is an integer number (11511375).

Almost surely, 2^23022749 is an apocalyptic number.

It is an amenable number.

23022749 is a deficient number, since it is larger than the sum of its proper divisors (1).

23022749 is an equidigital number, since it uses as much as digits as its factorization.

23022749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 23022749 is about 4798.2026843392. The cubic root of 23022749 is about 284.4804281474.

The spelling of 23022749 in words is "twenty-three million, twenty-two thousand, seven hundred forty-nine".