422144406 has 16 divisors (see below), whose sum is σ = 938098800. Its totient is φ = 140714784.

The previous prime is 422144381. The next prime is 422144407. The reversal of 422144406 is 604441224.

It is a happy number.

422144406 is a `hidden beast` number, since 4 + 2 + 214 + 440 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 422144406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422144407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3908691 + ... + 3908798.

It is an arithmetic number, because the mean of its divisors is an integer number (58631175).

Almost surely, 2^422144406 is an apocalyptic number.

422144406 is an abundant number, since it is smaller than the sum of its proper divisors (515954394).

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

422144406 is a wasteful number, since it uses less digits than its factorization.

422144406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7817500 (or 7817494 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 422144406 is about 20546.1530705872. The cubic root of 422144406 is about 750.1596140287.

The spelling of 422144406 in words is "four hundred twenty-two million, one hundred forty-four thousand, four hundred six".