22347839 has 2 divisors, whose sum is σ = 22347840. Its totient is φ = 22347838.

The previous prime is 22347827. The next prime is 22347863. The reversal of 22347839 is 93874322.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22347839 - 2⁴ = 22347823 is a prime.

It is a Chen prime.

It is a zygodrome in base 4.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22347739) 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, 11173919 + 11173920.

It is an arithmetic number, because the mean of its divisors is an integer number (11173920).

Almost surely, 2^22347839 is an apocalyptic number.

22347839 is a deficient number, since it is larger than the sum of its proper divisors (1).

22347839 is an equidigital number, since it uses as much as digits as its factorization.

22347839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 38.

The square root of 22347839 is about 4727.3501033877. The cubic root of 22347839 is about 281.6729731829.

The spelling of 22347839 in words is "twenty-two million, three hundred forty-seven thousand, eight hundred thirty-nine".