8689009439 has 4 divisors (see below), whose sum is σ = 9478919400. Its totient is φ = 7899099480.

The previous prime is 8689009411. The next prime is 8689009513. The reversal of 8689009439 is 9349009868.

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

It is a cyclic number.

It is not a de Polignac number, because 8689009439 - 2²⁰ = 8687960863 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 (8689009409) 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, 394954964 + ... + 394954985.

It is an arithmetic number, because the mean of its divisors is an integer number (2369729850).

Almost surely, 2^8689009439 is an apocalyptic number.

8689009439 is a deficient number, since it is larger than the sum of its proper divisors (789909961).

8689009439 is a wasteful number, since it uses less digits than its factorization.

8689009439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789909960.

The product of its (nonzero) digits is 3359232, while the sum is 56.

The square root of 8689009439 is about 93214.8563212968. The cubic root of 8689009439 is about 2055.8436823646.

The spelling of 8689009439 in words is "eight billion, six hundred eighty-nine million, nine thousand, four hundred thirty-nine".