422209956 has 96 divisors (see below), whose sum is σ = 1202503680. Its totient is φ = 112694400.

The previous prime is 422209951. The next prime is 422209973. The reversal of 422209956 is 659902224.

It is a super-2 number, since 2×422209956² = 356522493891043872, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (422209951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72721 + ... + 78311.

It is an arithmetic number, because the mean of its divisors is an integer number (12526080).

Almost surely, 2^422209956 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422209956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (601251840).

422209956 is an abundant number, since it is smaller than the sum of its proper divisors (780293724).

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

422209956 is a wasteful number, since it uses less digits than its factorization.

422209956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5665 (or 5663 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 422209956 is about 20547.7481977953. The cubic root of 422209956 is about 750.1984399353.

The spelling of 422209956 in words is "four hundred twenty-two million, two hundred nine thousand, nine hundred fifty-six".