22397329 has 2 divisors, whose sum is σ = 22397330. Its totient is φ = 22397328.

The previous prime is 22397327. The next prime is 22397351. The reversal of 22397329 is 92379322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17766225 + 4631104 = 4215^2 + 2152^2 .

It is a cyclic number.

It is not a de Polignac number, because 22397329 - 2¹ = 22397327 is a prime.

Together with 22397327, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22397327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11198664 + 11198665.

It is an arithmetic number, because the mean of its divisors is an integer number (11198665).

Almost surely, 2^22397329 is an apocalyptic number.

It is an amenable number.

22397329 is a deficient number, since it is larger than the sum of its proper divisors (1).

22397329 is an equidigital number, since it uses as much as digits as its factorization.

22397329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 37.

The square root of 22397329 is about 4732.5816421907. The cubic root of 22397329 is about 281.8807444712.

The spelling of 22397329 in words is "twenty-two million, three hundred ninety-seven thousand, three hundred twenty-nine".