835898985 has 12 divisors (see below), whose sum is σ = 1448891652. Its totient is φ = 445812768.

The previous prime is 835898971. The next prime is 835898989. The reversal of 835898985 is 589898538.

It can be written as a sum of positive squares in 2 ways, for example, as 240002064 + 595896921 = 15492^2 + 24411^2 .

It is not a de Polignac number, because 835898985 - 2⁹ = 835898473 is a prime.

It is a super-2 number, since 2×835898985² = 1397454226248060450, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (835898989) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9287722 + ... + 9287811.

It is an arithmetic number, because the mean of its divisors is an integer number (120740971).

Almost surely, 2^835898985 is an apocalyptic number.

It is an amenable number.

835898985 is a deficient number, since it is larger than the sum of its proper divisors (612992667).

835898985 is a wasteful number, since it uses less digits than its factorization.

835898985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18575544 (or 18575541 counting only the distinct ones).

The product of its digits is 24883200, while the sum is 63.

The square root of 835898985 is about 28911.9176984163. The cubic root of 835898985 is about 942.0007877257. Note that the first 3 decimals are identical.

The spelling of 835898985 in words is "eight hundred thirty-five million, eight hundred ninety-eight thousand, nine hundred eighty-five".