9945222 has 32 divisors (see below), whose sum is σ = 22954752. Its totient is φ = 2813664.

The previous prime is 9945211. The next prime is 9945233. The reversal of 9945222 is 2225499.

It is an interprime number because it is at equal distance from previous prime (9945211) and next prime (9945233).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3388 + ... + 5600.

It is an arithmetic number, because the mean of its divisors is an integer number (717336).

Almost surely, 2^9945222 is an apocalyptic number.

9945222 is an abundant number, since it is smaller than the sum of its proper divisors (13009530).

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

9945222 is a wasteful number, since it uses less digits than its factorization.

9945222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2332.

The product of its digits is 12960, while the sum is 33.

The square root of 9945222 is about 3153.6046042584. The cubic root of 9945222 is about 215.0493631022.

It can be divided in two parts, 994 and 5222, that added together give a triangular number (6216 = T₁₁₁).

The spelling of 9945222 in words is "nine million, nine hundred forty-five thousand, two hundred twenty-two".