7987159 has 4 divisors (see below), whose sum is σ = 8031960. Its totient is φ = 7942360.

The previous prime is 7987139. The next prime is 7987223. The reversal of 7987159 is 9517897.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9517897 = 1009 ⋅9433.

It is a cyclic number.

It is not a de Polignac number, because 7987159 - 2⁹ = 7986647 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 (7987129) 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, 22132 + ... + 22489.

It is an arithmetic number, because the mean of its divisors is an integer number (2007990).

Almost surely, 2^7987159 is an apocalyptic number.

7987159 is a deficient number, since it is larger than the sum of its proper divisors (44801).

7987159 is a wasteful number, since it uses less digits than its factorization.

7987159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44800.

The product of its digits is 158760, while the sum is 46.

The square root of 7987159 is about 2826.1562235659. The cubic root of 7987159 is about 199.8929343616.

The spelling of 7987159 in words is "seven million, nine hundred eighty-seven thousand, one hundred fifty-nine".