7987912 has 16 divisors (see below), whose sum is σ = 15025500. Its totient is φ = 3981120.

The previous prime is 7987901. The next prime is 7987921. The reversal of 7987912 is 2197897.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7806436 + 181476 = 2794^2 + 426^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1362 + ... + 4222.

Almost surely, 2^7987912 is an apocalyptic number.

It is an amenable number.

7987912 is a deficient number, since it is larger than the sum of its proper divisors (7037588).

7987912 is a wasteful number, since it uses less digits than its factorization.

7987912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3216 (or 3212 counting only the distinct ones).

The product of its digits is 63504, while the sum is 43.

The square root of 7987912 is about 2826.2894402379. The cubic root of 7987912 is about 199.8992158880.

The spelling of 7987912 in words is "seven million, nine hundred eighty-seven thousand, nine hundred twelve".