22399313 has 2 divisors, whose sum is σ = 22399314. Its totient is φ = 22399312.

The previous prime is 22399303. The next prime is 22399357. The reversal of 22399313 is 31399322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19864849 + 2534464 = 4457^2 + 1592^2 .

It is a cyclic number.

It is not a de Polignac number, because 22399313 - 2⁶ = 22399249 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22399313.

It is not a weakly prime, because it can be changed into another prime (22399303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11199656 + 11199657.

It is an arithmetic number, because the mean of its divisors is an integer number (11199657).

Almost surely, 2^22399313 is an apocalyptic number.

It is an amenable number.

22399313 is a deficient number, since it is larger than the sum of its proper divisors (1).

22399313 is an equidigital number, since it uses as much as digits as its factorization.

22399313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8748, while the sum is 32.

The square root of 22399313 is about 4732.7912483016. The cubic root of 22399313 is about 281.8890674113.

Subtracting 22399313 from its reverse (31399322), we obtain a palindrome (9000009).

The spelling of 22399313 in words is "twenty-two million, three hundred ninety-nine thousand, three hundred thirteen".