22239393 has 8 divisors (see below), whose sum is σ = 32348256. Its totient is φ = 13478400.

The previous prime is 22239391. The next prime is 22239397. The reversal of 22239393 is 39393222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22239393 - 2¹ = 22239391 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 673921 = 22239393 / (2 + 2 + 2 + 3 + 9 + 3 + 9 + 3).

It is not an unprimeable number, because it can be changed into a prime (22239391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 336928 + ... + 336993.

It is an arithmetic number, because the mean of its divisors is an integer number (4043532).

Almost surely, 2^22239393 is an apocalyptic number.

It is an amenable number.

22239393 is a deficient number, since it is larger than the sum of its proper divisors (10108863).

22239393 is a wasteful number, since it uses less digits than its factorization.

22239393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673935.

The product of its digits is 17496, while the sum is 33.

The square root of 22239393 is about 4715.8660922465. The cubic root of 22239393 is about 281.2166150990.

The spelling of 22239393 in words is "twenty-two million, two hundred thirty-nine thousand, three hundred ninety-three".