22000399 has 2 divisors, whose sum is σ = 22000400. Its totient is φ = 22000398.

The previous prime is 22000387. The next prime is 22000403. The reversal of 22000399 is 99300022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22000399 - 2¹³ = 21992207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22000339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11000199 + 11000200.

It is an arithmetic number, because the mean of its divisors is an integer number (11000200).

Almost surely, 2^22000399 is an apocalyptic number.

22000399 is a deficient number, since it is larger than the sum of its proper divisors (1).

22000399 is an equidigital number, since it uses as much as digits as its factorization.

22000399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 22000399 is about 4690.4582931735. The cubic root of 22000399 is about 280.2056270154.

The spelling of 22000399 in words is "twenty-two million, three hundred ninety-nine", and thus it is an aban number.