85389544 has 8 divisors (see below), whose sum is σ = 160105410. Its totient is φ = 42694768.

The previous prime is 85389509. The next prime is 85389571. The reversal of 85389544 is 44598358.

It can be written as a sum of positive squares in only one way, i.e., 63393444 + 21996100 = 7962^2 + 4690^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 85389494 and 85389503.

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 as a sum of consecutive naturals, namely, 5336839 + ... + 5336854.

Almost surely, 2^85389544 is an apocalyptic number.

It is an amenable number.

85389544 is a deficient number, since it is larger than the sum of its proper divisors (74715866).

85389544 is a wasteful number, since it uses less digits than its factorization.

85389544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10673699 (or 10673695 counting only the distinct ones).

The product of its digits is 691200, while the sum is 46.

The square root of 85389544 is about 9240.6462977435. The cubic root of 85389544 is about 440.3536138075.

The spelling of 85389544 in words is "eighty-five million, three hundred eighty-nine thousand, five hundred forty-four".