8557239089 has 8 divisors (see below), whose sum is σ = 9781436928. Its totient is φ = 7333475040.

The previous prime is 8557239077. The next prime is 8557239113. The reversal of 8557239089 is 9809327558.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8557239089 - 2¹² = 8557234993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8557239029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65012 + ... + 146085.

It is an arithmetic number, because the mean of its divisors is an integer number (1222679616).

Almost surely, 2^8557239089 is an apocalyptic number.

It is an amenable number.

8557239089 is a deficient number, since it is larger than the sum of its proper divisors (1224197839).

8557239089 is a wasteful number, since it uses less digits than its factorization.

8557239089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216895.

The product of its (nonzero) digits is 5443200, while the sum is 56.

The square root of 8557239089 is about 92505.3462725263. The cubic root of 8557239089 is about 2045.3982911553.

The spelling of 8557239089 in words is "eight billion, five hundred fifty-seven million, two hundred thirty-nine thousand, eighty-nine".