7922997 has 12 divisors (see below), whose sum is σ = 11469484. Its totient is φ = 5270400.

The previous prime is 7922987. The next prime is 7923001. The reversal of 7922997 is 7992297.

It can be written as a sum of positive squares in 2 ways, for example, as 3538161 + 4384836 = 1881^2 + 2094^2 .

It is not a de Polignac number, because 7922997 - 2¹¹ = 7920949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7922947) 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, 5997 + ... + 7197.

Almost surely, 2^7922997 is an apocalyptic number.

It is an amenable number.

7922997 is a deficient number, since it is larger than the sum of its proper divisors (3546487).

7922997 is a wasteful number, since it uses less digits than its factorization.

7922997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1940 (or 1937 counting only the distinct ones).

The product of its digits is 142884, while the sum is 45.

The square root of 7922997 is about 2814.7818743199. The cubic root of 7922997 is about 199.3562384117.

The spelling of 7922997 in words is "seven million, nine hundred twenty-two thousand, nine hundred ninety-seven".