854315985 has 16 divisors (see below), whose sum is σ = 1374546240. Its totient is φ = 453088320.

The previous prime is 854315983. The next prime is 854315989. The reversal of 854315985 is 589513458.

It is a happy number.

It is not a de Polignac number, because 854315985 - 2¹ = 854315983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (854315983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156406 + ... + 161775.

It is an arithmetic number, because the mean of its divisors is an integer number (85909140).

Almost surely, 2^854315985 is an apocalyptic number.

It is an amenable number.

854315985 is a deficient number, since it is larger than the sum of its proper divisors (520230255).

854315985 is a wasteful number, since it uses less digits than its factorization.

854315985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318368.

The product of its digits is 864000, while the sum is 48.

The square root of 854315985 is about 29228.6842844491. The cubic root of 854315985 is about 948.8688235275.

The spelling of 854315985 in words is "eight hundred fifty-four million, three hundred fifteen thousand, nine hundred eighty-five".