22427399 has 2 divisors, whose sum is σ = 22427400. Its totient is φ = 22427398.

The previous prime is 22427393. The next prime is 22427417. The reversal of 22427399 is 99372422.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22427399 - 2¹⁶ = 22361863 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22427393) 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, 11213699 + 11213700.

It is an arithmetic number, because the mean of its divisors is an integer number (11213700).

Almost surely, 2^22427399 is an apocalyptic number.

22427399 is a deficient number, since it is larger than the sum of its proper divisors (1).

22427399 is an equidigital number, since it uses as much as digits as its factorization.

22427399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 38.

The square root of 22427399 is about 4735.7574895681. The cubic root of 22427399 is about 282.0068363448.

The spelling of 22427399 in words is "twenty-two million, four hundred twenty-seven thousand, three hundred ninety-nine".