7992189 has 10 divisors (see below), whose sum is σ = 11939070. Its totient is φ = 5328072.

The previous prime is 7992181. The next prime is 7992221. The reversal of 7992189 is 9812997.

It can be written as a sum of positive squares in only one way, i.e., 4588164 + 3404025 = 2142^2 + 1845^2 .

It is not a de Polignac number, because 7992189 - 2³ = 7992181 is a prime.

7992189 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7992181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 49254 + ... + 49415.

It is an arithmetic number, because the mean of its divisors is an integer number (1193907).

Almost surely, 2^7992189 is an apocalyptic number.

It is an amenable number.

7992189 is a deficient number, since it is larger than the sum of its proper divisors (3946881).

7992189 is an equidigital number, since it uses as much as digits as its factorization.

7992189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98681 (or 98672 counting only the distinct ones).

The product of its digits is 81648, while the sum is 45.

The square root of 7992189 is about 2827.0459847693. The cubic root of 7992189 is about 199.9348871372.

The spelling of 7992189 in words is "seven million, nine hundred ninety-two thousand, one hundred eighty-nine".