9972212 has 6 divisors (see below), whose sum is σ = 17451378. Its totient is φ = 4986104.

The previous prime is 9972199. The next prime is 9972233. The reversal of 9972212 is 2122799.

It can be written as a sum of positive squares in only one way, i.e., 8797156 + 1175056 = 2966^2 + 1084^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1246523 + ... + 1246530.

It is an arithmetic number, because the mean of its divisors is an integer number (2908563).

Almost surely, 2^9972212 is an apocalyptic number.

It is an amenable number.

9972212 is a deficient number, since it is larger than the sum of its proper divisors (7479166).

9972212 is a wasteful number, since it uses less digits than its factorization.

9972212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2493057 (or 2493055 counting only the distinct ones).

The product of its digits is 4536, while the sum is 32.

The square root of 9972212 is about 3157.8809350576. The cubic root of 9972212 is about 215.2437257694.

The spelling of 9972212 in words is "nine million, nine hundred seventy-two thousand, two hundred twelve".