7971223 has 12 divisors (see below), whose sum is σ = 8735688. Its totient is φ = 7269600.

The previous prime is 7971221. The next prime is 7971239. The reversal of 7971223 is 3221797.

It is not a de Polignac number, because 7971223 - 2¹ = 7971221 is a prime.

It is a super-2 number, since 2×7971223² = 127080792231458, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7971221) 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 11 ways as a sum of consecutive naturals, for example, 16836 + ... + 17302.

It is an arithmetic number, because the mean of its divisors is an integer number (727974).

Almost surely, 2^7971223 is an apocalyptic number.

7971223 is a deficient number, since it is larger than the sum of its proper divisors (764465).

7971223 is a wasteful number, since it uses less digits than its factorization.

7971223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594 (or 581 counting only the distinct ones).

The product of its digits is 5292, while the sum is 31.

The square root of 7971223 is about 2823.3354388028. The cubic root of 7971223 is about 199.7599035505.

The spelling of 7971223 in words is "seven million, nine hundred seventy-one thousand, two hundred twenty-three".