7988879 has 4 divisors (see below), whose sum is σ = 8108184. Its totient is φ = 7869576.

The previous prime is 7988857. The next prime is 7988899. The reversal of 7988879 is 9788897.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7988879 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 (7988819) 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, 59552 + ... + 59685.

It is an arithmetic number, because the mean of its divisors is an integer number (2027046).

Almost surely, 2^7988879 is an apocalyptic number.

7988879 is a deficient number, since it is larger than the sum of its proper divisors (119305).

7988879 is a wasteful number, since it uses less digits than its factorization.

7988879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119304.

The product of its digits is 2032128, while the sum is 56.

The square root of 7988879 is about 2826.4605074191. The cubic root of 7988879 is about 199.9072820235.

The spelling of 7988879 in words is "seven million, nine hundred eighty-eight thousand, eight hundred seventy-nine".