22399697 has 2 divisors, whose sum is σ = 22399698. Its totient is φ = 22399696.

The previous prime is 22399691. The next prime is 22399709. The reversal of 22399697 is 79699322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22316176 + 83521 = 4724^2 + 289^2 .

It is a cyclic number.

It is not a de Polignac number, because 22399697 - 2⁸ = 22399441 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22399691) 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, 11199848 + 11199849.

It is an arithmetic number, because the mean of its divisors is an integer number (11199849).

Almost surely, 2^22399697 is an apocalyptic number.

It is an amenable number.

22399697 is a deficient number, since it is larger than the sum of its proper divisors (1).

22399697 is an equidigital number, since it uses as much as digits as its factorization.

22399697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 367416, while the sum is 47.

The square root of 22399697 is about 4732.8318161540. The cubic root of 22399697 is about 281.8906782462.

The spelling of 22399697 in words is "twenty-two million, three hundred ninety-nine thousand, six hundred ninety-seven".