23440029 has 4 divisors (see below), whose sum is σ = 31253376. Its totient is φ = 15626684.

The previous prime is 23440003. The next prime is 23440037. The reversal of 23440029 is 92004432.

It is a happy number.

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 23440029 - 2⁹ = 23439517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23439990 and 23440008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23440099) 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, 3906669 + ... + 3906674.

It is an arithmetic number, because the mean of its divisors is an integer number (7813344).

Almost surely, 2^23440029 is an apocalyptic number.

It is an amenable number.

23440029 is a deficient number, since it is larger than the sum of its proper divisors (7813347).

23440029 is an equidigital number, since it uses as much as digits as its factorization.

23440029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7813346.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 23440029 is about 4841.4903697106. The cubic root of 23440029 is about 286.1888535386.

The spelling of 23440029 in words is "twenty-three million, four hundred forty thousand, twenty-nine".