22144709 has 4 divisors (see below), whose sum is σ = 23310240. Its totient is φ = 20979180.

The previous prime is 22144697. The next prime is 22144711. The reversal of 22144709 is 90744122.

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 22144709 - 2⁸ = 22144453 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22144729) 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, 582737 + ... + 582774.

It is an arithmetic number, because the mean of its divisors is an integer number (5827560).

Almost surely, 2^22144709 is an apocalyptic number.

It is an amenable number.

22144709 is a deficient number, since it is larger than the sum of its proper divisors (1165531).

22144709 is a wasteful number, since it uses less digits than its factorization.

22144709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165530.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 22144709 is about 4705.8165072599. The cubic root of 22144709 is about 280.8169550412.

The spelling of 22144709 in words is "twenty-two million, one hundred forty-four thousand, seven hundred nine".