7987369 has 4 divisors (see below), whose sum is σ = 8601796. Its totient is φ = 7372944.

The previous prime is 7987363. The next prime is 7987373. The reversal of 7987369 is 9637897.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 831744 + 7155625 = 912^2 + 2675^2 .

It is a cyclic number.

It is not a de Polignac number, because 7987369 - 2⁷ = 7987241 is a prime.

It is a super-2 number, since 2×7987369² = 127596127084322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7987363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307194 + ... + 307219.

It is an arithmetic number, because the mean of its divisors is an integer number (2150449).

Almost surely, 2^7987369 is an apocalyptic number.

It is an amenable number.

7987369 is a deficient number, since it is larger than the sum of its proper divisors (614427).

7987369 is a wasteful number, since it uses less digits than its factorization.

7987369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614426.

The product of its digits is 571536, while the sum is 49.

The square root of 7987369 is about 2826.1933762572. The cubic root of 7987369 is about 199.8946862214.

The spelling of 7987369 in words is "seven million, nine hundred eighty-seven thousand, three hundred sixty-nine".