9972219 has 8 divisors (see below), whose sum is σ = 13514512. Its totient is φ = 6539040.

The previous prime is 9972199. The next prime is 9972233. The reversal of 9972219 is 9122799.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9972219 - 2⁵ = 9972187 is a prime.

It is a super-2 number, since 2×9972219² = 198890303567922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9972119) 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 7 ways as a sum of consecutive naturals, for example, 27064 + ... + 27429.

It is an arithmetic number, because the mean of its divisors is an integer number (1689314).

Almost surely, 2^9972219 is an apocalyptic number.

9972219 is a deficient number, since it is larger than the sum of its proper divisors (3542293).

9972219 is a wasteful number, since it uses less digits than its factorization.

9972219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54557.

The product of its digits is 20412, while the sum is 39.

The square root of 9972219 is about 3157.8820433955. The cubic root of 9972219 is about 215.2437761329.

The spelling of 9972219 in words is "nine million, nine hundred seventy-two thousand, two hundred nineteen".