23440749 has 16 divisors (see below), whose sum is σ = 32735232. Its totient is φ = 14891888.

The previous prime is 23440727. The next prime is 23440757. The reversal of 23440749 is 94704432.

It is a cyclic number.

It is not a de Polignac number, because 23440749 - 2⁹ = 23440237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23440799) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25984 + ... + 26870.

It is an arithmetic number, because the mean of its divisors is an integer number (2045952).

Almost surely, 2^23440749 is an apocalyptic number.

It is an amenable number.

23440749 is a deficient number, since it is larger than the sum of its proper divisors (9294483).

23440749 is a wasteful number, since it uses less digits than its factorization.

23440749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 23440749 is about 4841.5647264082. The cubic root of 23440749 is about 286.1917837663.

The spelling of 23440749 in words is "twenty-three million, four hundred forty thousand, seven hundred forty-nine".