85384836 has 18 divisors (see below), whose sum is σ = 215833982. Its totient is φ = 28461600.

The previous prime is 85384801. The next prime is 85384843. The reversal of 85384836 is 63848358.

It can be written as a sum of positive squares in only one way, i.e., 81000000 + 4384836 = 9000^2 + 2094^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 85384791 and 85384800.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1185865 + ... + 1185936.

Almost surely, 2^85384836 is an apocalyptic number.

It is an amenable number.

85384836 is an abundant number, since it is smaller than the sum of its proper divisors (130449146).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85384836 is a wasteful number, since it uses less digits than its factorization.

85384836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2371811 (or 2371806 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 85384836 is about 9240.3915501455. The cubic root of 85384836 is about 440.3455206116.

The spelling of 85384836 in words is "eighty-five million, three hundred eighty-four thousand, eight hundred thirty-six".