7987089 has 12 divisors (see below), whose sum is σ = 11706128. Its totient is φ = 4840440.

The previous prime is 7987081. The next prime is 7987099. The reversal of 7987089 is 9807897.

It is not a de Polignac number, because 7987089 - 2³ = 7987081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7987081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10639 + ... + 11364.

Almost surely, 2^7987089 is an apocalyptic number.

It is an amenable number.

7987089 is a deficient number, since it is larger than the sum of its proper divisors (3719039).

7987089 is a wasteful number, since it uses less digits than its factorization.

7987089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22028 (or 22017 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 48.

The square root of 7987089 is about 2826.1438392269. The cubic root of 7987089 is about 199.8923504015.

It can be divided in two parts, 798 and 7089, that added together give a palindrome (7887).

The spelling of 7987089 in words is "seven million, nine hundred eighty-seven thousand, eighty-nine".