8939389517 has 4 divisors (see below), whose sum is σ = 8939591520. Its totient is φ = 8939187516.

The previous prime is 8939389499. The next prime is 8939389523. The reversal of 8939389517 is 7159839398.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7159839398 = 2 ⋅3579919699.

It is a cyclic number.

It is not a de Polignac number, because 8939389517 - 2⁶ = 8939389453 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 8939389517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8939389597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2783 + ... + 133740.

It is an arithmetic number, because the mean of its divisors is an integer number (2234897880).

Almost surely, 2^8939389517 is an apocalyptic number.

It is an amenable number.

8939389517 is a deficient number, since it is larger than the sum of its proper divisors (202003).

8939389517 is a wasteful number, since it uses less digits than its factorization.

8939389517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202002.

The product of its digits is 14696640, while the sum is 62.

The square root of 8939389517 is about 94548.3448665285. The cubic root of 8939389517 is about 2075.4038613528.

The spelling of 8939389517 in words is "eight billion, nine hundred thirty-nine million, three hundred eighty-nine thousand, five hundred seventeen".