22440029 has 4 divisors (see below), whose sum is σ = 22724160. Its totient is φ = 22155900.

The previous prime is 22439999. The next prime is 22440031. The reversal of 22440029 is 92004422.

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 22440029 - 2⁸ = 22439773 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22439986 and 22440013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22440049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141947 + ... + 142104.

It is an arithmetic number, because the mean of its divisors is an integer number (5681040).

Almost surely, 2^22440029 is an apocalyptic number.

It is an amenable number.

22440029 is a deficient number, since it is larger than the sum of its proper divisors (284131).

22440029 is an equidigital number, since it uses as much as digits as its factorization.

22440029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284130.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 22440029 is about 4737.0907738822. The cubic root of 22440029 is about 282.0597638370.

The spelling of 22440029 in words is "twenty-two million, four hundred forty thousand, twenty-nine".