22044393 has 40 divisors (see below), whose sum is σ = 39866112. Its totient is φ = 11850624.

The previous prime is 22044377. The next prime is 22044403. The reversal of 22044393 is 39344022.

It is a happy number.

22044393 is a `hidden beast` number, since 220 + 4 + 439 + 3 = 666.

It is not a de Polignac number, because 22044393 - 2⁴ = 22044377 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22044353) 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 39 ways as a sum of consecutive naturals, for example, 8496 + ... + 10782.

Almost surely, 2^22044393 is an apocalyptic number.

It is an amenable number.

22044393 is a deficient number, since it is larger than the sum of its proper divisors (17821719).

22044393 is a wasteful number, since it uses less digits than its factorization.

22044393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2323 (or 2314 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 22044393 is about 4695.1456846407. The cubic root of 22044393 is about 280.3922775469.

The spelling of 22044393 in words is "twenty-two million, forty-four thousand, three hundred ninety-three".