422338643 has 2 divisors, whose sum is σ = 422338644. Its totient is φ = 422338642.

The previous prime is 422338639. The next prime is 422338649. The reversal of 422338643 is 346833224.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 422338643 - 2² = 422338639 is a prime.

It is not a weakly prime, because it can be changed into another prime (422338649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211169321 + 211169322.

It is an arithmetic number, because the mean of its divisors is an integer number (211169322).

Almost surely, 2^422338643 is an apocalyptic number.

422338643 is a deficient number, since it is larger than the sum of its proper divisors (1).

422338643 is an equidigital number, since it uses as much as digits as its factorization.

422338643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 35.

The square root of 422338643 is about 20550.8793729125. The cubic root of 422338643 is about 750.2746508177.

The spelling of 422338643 in words is "four hundred twenty-two million, three hundred thirty-eight thousand, six hundred forty-three".