7969221 has 12 divisors (see below), whose sum is σ = 12396748. Its totient is φ = 4904064.

The previous prime is 7969219. The next prime is 7969231. The reversal of 7969221 is 1229697.

It can be written as a sum of positive squares in 2 ways, for example, as 1664100 + 6305121 = 1290^2 + 2511^2 .

It is not a de Polignac number, because 7969221 - 2¹ = 7969219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7969231) 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, 33940 + ... + 34173.

Almost surely, 2^7969221 is an apocalyptic number.

It is an amenable number.

7969221 is a deficient number, since it is larger than the sum of its proper divisors (4427527).

7969221 is a wasteful number, since it uses less digits than its factorization.

7969221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68132 (or 68129 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 7969221 is about 2822.9808713486. The cubic root of 7969221 is about 199.7431786886.

The spelling of 7969221 in words is "seven million, nine hundred sixty-nine thousand, two hundred twenty-one".