85985390 has 16 divisors (see below), whose sum is σ = 154990800. Its totient is φ = 34345920.

The previous prime is 85985369. The next prime is 85985399. The reversal of 85985390 is 9358958.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85985399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1961 + ... + 13259.

It is an arithmetic number, because the mean of its divisors is an integer number (9686925).

Almost surely, 2^85985390 is an apocalyptic number.

85985390 is a deficient number, since it is larger than the sum of its proper divisors (69005410).

85985390 is a wasteful number, since it uses less digits than its factorization.

85985390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12067.

The product of its (nonzero) digits is 388800, while the sum is 47.

The square root of 85985390 is about 9272.8307436295. The cubic root of 85985390 is about 441.3754992424.

The spelling of 85985390 in words is "eighty-five million, nine hundred eighty-five thousand, three hundred ninety".