22004393 has 2 divisors, whose sum is σ = 22004394. Its totient is φ = 22004392.

The previous prime is 22004383. The next prime is 22004419. The reversal of 22004393 is 39340022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20720704 + 1283689 = 4552^2 + 1133^2 .

It is a cyclic number.

It is not a de Polignac number, because 22004393 - 2⁶ = 22004329 is a prime.

It is a super-2 number, since 2×22004393² = 968386622596898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22004303) 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 as a sum of consecutive naturals, namely, 11002196 + 11002197.

It is an arithmetic number, because the mean of its divisors is an integer number (11002197).

Almost surely, 2^22004393 is an apocalyptic number.

It is an amenable number.

22004393 is a deficient number, since it is larger than the sum of its proper divisors (1).

22004393 is an equidigital number, since it uses as much as digits as its factorization.

22004393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 22004393 is about 4690.8840318217. The cubic root of 22004393 is about 280.2225823679. Note that the first 3 decimals are identical.

The spelling of 22004393 in words is "twenty-two million, four thousand, three hundred ninety-three".