900408222 has 72 divisors (see below), whose sum is σ = 2283358896. Its totient is φ = 255677184.

The previous prime is 900408221. The next prime is 900408227. The reversal of 900408222 is 222804009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (900408221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 144238 + ... + 150350.

It is an arithmetic number, because the mean of its divisors is an integer number (31713318).

Almost surely, 2^900408222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 900408222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1141679448).

900408222 is an abundant number, since it is smaller than the sum of its proper divisors (1382950674).

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

900408222 is a wasteful number, since it uses less digits than its factorization.

900408222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6302 (or 6292 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 900408222 is about 30006.8029286694. The cubic root of 900408222 is about 965.6353380990.

The spelling of 900408222 in words is "nine hundred million, four hundred eight thousand, two hundred twenty-two".