22144493 has 4 divisors (see below), whose sum is σ = 25308000. Its totient is φ = 18980988.

The previous prime is 22144471. The next prime is 22144511. The reversal of 22144493 is 39444122.

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 22144493 - 2²⁴ = 5367277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22144433) 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, 1581743 + ... + 1581756.

It is an arithmetic number, because the mean of its divisors is an integer number (6327000).

Almost surely, 2^22144493 is an apocalyptic number.

It is an amenable number.

22144493 is a deficient number, since it is larger than the sum of its proper divisors (3163507).

22144493 is an equidigital number, since it uses as much as digits as its factorization.

22144493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3163506.

The product of its digits is 6912, while the sum is 29.

The square root of 22144493 is about 4705.7935568828. The cubic root of 22144493 is about 280.8160420066.

The spelling of 22144493 in words is "twenty-two million, one hundred forty-four thousand, four hundred ninety-three".