85383985 has 4 divisors (see below), whose sum is σ = 102460788. Its totient is φ = 68307184.

The previous prime is 85383983. The next prime is 85383989. The reversal of 85383985 is 58938358.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58938358 = 2 ⋅29469179.

It can be written as a sum of positive squares in 2 ways, for example, as 16941456 + 68442529 = 4116^2 + 8273^2 .

It is a cyclic number.

It is not a de Polignac number, because 85383985 - 2¹ = 85383983 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85383983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8538394 + ... + 8538403.

It is an arithmetic number, because the mean of its divisors is an integer number (25615197).

Almost surely, 2^85383985 is an apocalyptic number.

It is an amenable number.

85383985 is a deficient number, since it is larger than the sum of its proper divisors (17076803).

85383985 is a wasteful number, since it uses less digits than its factorization.

85383985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17076802.

The product of its digits is 1036800, while the sum is 49.

The square root of 85383985 is about 9240.3455021985. The cubic root of 85383985 is about 440.3440576848.

It can be divided in two parts, 85383 and 985, that added together give a palindrome (86368).

The spelling of 85383985 in words is "eighty-five million, three hundred eighty-three thousand, nine hundred eighty-five".