422943906 has 64 divisors (see below), whose sum is σ = 1060356096. Its totient is φ = 109257600.

The previous prime is 422943839. The next prime is 422943977. The reversal of 422943906 is 609349224.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85846 + ... + 90638.

It is an arithmetic number, because the mean of its divisors is an integer number (16568064).

Almost surely, 2^422943906 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422943906, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (530178048).

422943906 is an abundant number, since it is smaller than the sum of its proper divisors (637412190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

422943906 is a wasteful number, since it uses less digits than its factorization.

422943906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5007.

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 422943906 is about 20565.6000641849. The cubic root of 422943906 is about 750.6328915586.

The spelling of 422943906 in words is "four hundred twenty-two million, nine hundred forty-three thousand, nine hundred six".