23440769 has 4 divisors (see below), whose sum is σ = 25571760. Its totient is φ = 21309780.

The previous prime is 23440763. The next prime is 23440783. The reversal of 23440769 is 96704432.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23440769 - 2⁸ = 23440513 is a prime.

It is a super-2 number, since 2×23440769² = 1098939302622722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23440763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1065479 + ... + 1065500.

It is an arithmetic number, because the mean of its divisors is an integer number (6392940).

Almost surely, 2^23440769 is an apocalyptic number.

It is an amenable number.

23440769 is a deficient number, since it is larger than the sum of its proper divisors (2130991).

23440769 is a wasteful number, since it uses less digits than its factorization.

23440769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2130990.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 23440769 is about 4841.5667918557. The cubic root of 23440769 is about 286.1918651606.

The spelling of 23440769 in words is "twenty-three million, four hundred forty thousand, seven hundred sixty-nine".