7988915 has 8 divisors (see below), whose sum is σ = 10458288. Its totient is φ = 5810080.

The previous prime is 7988899. The next prime is 7988923. The reversal of 7988915 is 5198897.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7988915 - 2⁴ = 7988899 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7988915.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72572 + ... + 72681.

It is an arithmetic number, because the mean of its divisors is an integer number (1307286).

Almost surely, 2^7988915 is an apocalyptic number.

7988915 is a deficient number, since it is larger than the sum of its proper divisors (2469373).

7988915 is a wasteful number, since it uses less digits than its factorization.

7988915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145269.

The product of its digits is 181440, while the sum is 47.

The square root of 7988915 is about 2826.4668758010. The cubic root of 7988915 is about 199.9075823014.

The spelling of 7988915 in words is "seven million, nine hundred eighty-eight thousand, nine hundred fifteen".