8389138285 has 8 divisors (see below), whose sum is σ = 10982144736. Its totient is φ = 6101191440.

The previous prime is 8389138237. The next prime is 8389138297. The reversal of 8389138285 is 5828319838.

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

It is not a de Polignac number, because 8389138285 - 2¹¹ = 8389136237 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55), and also a Moran number because the ratio is a prime number: 152529787 = 8389138285 / (8 + 3 + 8 + 9 + 1 + 3 + 8 + 2 + 8 + 5).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76264839 + ... + 76264948.

It is an arithmetic number, because the mean of its divisors is an integer number (1372768092).

Almost surely, 2^8389138285 is an apocalyptic number.

It is an amenable number.

8389138285 is a deficient number, since it is larger than the sum of its proper divisors (2593006451).

8389138285 is a wasteful number, since it uses less digits than its factorization.

8389138285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152529803.

The product of its digits is 3317760, while the sum is 55.

The square root of 8389138285 is about 91592.2392181783. The cubic root of 8389138285 is about 2031.9161605060.

The spelling of 8389138285 in words is "eight billion, three hundred eighty-nine million, one hundred thirty-eight thousand, two hundred eighty-five".