422508994 has 12 divisors (see below), whose sum is σ = 651359394. Its totient is φ = 205543584.

The previous prime is 422508979. The next prime is 422509049. The reversal of 422508994 is 499805224.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 409455225 + 13053769 = 20235^2 + 3613^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 422508994.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 74419 + ... + 79894.

Almost surely, 2^422508994 is an apocalyptic number.

422508994 is a deficient number, since it is larger than the sum of its proper divisors (228850400).

422508994 is a wasteful number, since it uses less digits than its factorization.

422508994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154389 (or 154352 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 422508994 is about 20555.0235708938. The cubic root of 422508994 is about 750.3755121043.

The spelling of 422508994 in words is "four hundred twenty-two million, five hundred eight thousand, nine hundred ninety-four".