985009865 has 8 divisors (see below), whose sum is σ = 1350870720. Its totient is φ = 675435312.

The previous prime is 985009859. The next prime is 985009889. The reversal of 985009865 is 568900589.

It is a happy number.

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 985009865 - 2⁴ = 985009849 is a prime.

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, 14071535 + ... + 14071604.

It is an arithmetic number, because the mean of its divisors is an integer number (168858840).

Almost surely, 2^985009865 is an apocalyptic number.

It is an amenable number.

985009865 is a deficient number, since it is larger than the sum of its proper divisors (365860855).

985009865 is a wasteful number, since it uses less digits than its factorization.

985009865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28143151.

The product of its (nonzero) digits is 777600, while the sum is 50.

The square root of 985009865 is about 31384.8668150751. The cubic root of 985009865 is about 994.9781111823.

The spelling of 985009865 in words is "nine hundred eighty-five million, nine thousand, eight hundred sixty-five".