8719988 has 6 divisors (see below), whose sum is σ = 15259986. Its totient is φ = 4359992.

The previous prime is 8719987. The next prime is 8719999. The reversal of 8719988 is 8899178.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4831204 + 3888784 = 2198^2 + 1972^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8719987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1089995 + ... + 1090002.

It is an arithmetic number, because the mean of its divisors is an integer number (2543331).

Almost surely, 2^8719988 is an apocalyptic number.

It is an amenable number.

8719988 is a deficient number, since it is larger than the sum of its proper divisors (6539998).

8719988 is a wasteful number, since it uses less digits than its factorization.

8719988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2180001 (or 2179999 counting only the distinct ones).

The product of its digits is 290304, while the sum is 50.

The square root of 8719988 is about 2952.9625801896. The cubic root of 8719988 is about 205.8283988975.

The spelling of 8719988 in words is "eight million, seven hundred nineteen thousand, nine hundred eighty-eight".