422949643 has 2 divisors, whose sum is σ = 422949644. Its totient is φ = 422949642.

The previous prime is 422949607. The next prime is 422949673. The reversal of 422949643 is 346949224.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 422949643 - 2¹³ = 422941451 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 422949643.

It is not a weakly prime, because it can be changed into another prime (422949673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211474821 + 211474822.

It is an arithmetic number, because the mean of its divisors is an integer number (211474822).

Almost surely, 2^422949643 is an apocalyptic number.

422949643 is a deficient number, since it is larger than the sum of its proper divisors (1).

422949643 is an equidigital number, since it uses as much as digits as its factorization.

422949643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 43.

The square root of 422949643 is about 20565.7395442031. The cubic root of 422949643 is about 750.6362855165.

The spelling of 422949643 in words is "four hundred twenty-two million, nine hundred forty-nine thousand, six hundred forty-three".