9972222 has 16 divisors (see below), whose sum is σ = 21478800. Its totient is φ = 3068352.

The previous prime is 9972199. The next prime is 9972233. The reversal of 9972222 is 2222799.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 63847 + ... + 64002.

It is an arithmetic number, because the mean of its divisors is an integer number (1342425).

Almost surely, 2^9972222 is an apocalyptic number.

9972222 is an abundant number, since it is smaller than the sum of its proper divisors (11506578).

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

9972222 is a wasteful number, since it uses less digits than its factorization.

9972222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127867.

The product of its digits is 9072, while the sum is 33.

The square root of 9972222 is about 3157.8825183974. The cubic root of 9972222 is about 215.2437977172.

The spelling of 9972222 in words is "nine million, nine hundred seventy-two thousand, two hundred twenty-two".