85289390 has 16 divisors (see below), whose sum is σ = 154732032. Its totient is φ = 33846624.

The previous prime is 85289381. The next prime is 85289419. The reversal of 85289390 is 9398258.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32309 + ... + 34848.

It is an arithmetic number, because the mean of its divisors is an integer number (9670752).

Almost surely, 2^85289390 is an apocalyptic number.

85289390 is a deficient number, since it is larger than the sum of its proper divisors (69442642).

85289390 is a wasteful number, since it uses less digits than its factorization.

85289390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67291.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 85289390 is about 9235.2254980590. The cubic root of 85289390 is about 440.1813818300.

The spelling of 85289390 in words is "eighty-five million, two hundred eighty-nine thousand, three hundred ninety".