8719139 has 24 divisors (see below), whose sum is σ = 10814496. Its totient is φ = 6969600.

The previous prime is 8719133. The next prime is 8719141. The reversal of 8719139 is 9319178.

It is a de Polignac number, because none of the positive numbers 2^k-8719139 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (8719133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36059 + ... + 36299.

It is an arithmetic number, because the mean of its divisors is an integer number (450604).

Almost surely, 2^8719139 is an apocalyptic number.

8719139 is a deficient number, since it is larger than the sum of its proper divisors (2095357).

8719139 is a wasteful number, since it uses less digits than its factorization.

8719139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299 (or 288 counting only the distinct ones).

The product of its digits is 13608, while the sum is 38.

The square root of 8719139 is about 2952.8188227523. The cubic root of 8719139 is about 205.8217186902.

The spelling of 8719139 in words is "eight million, seven hundred nineteen thousand, one hundred thirty-nine".