85389290 has 16 divisors (see below), whose sum is σ = 175658112. Its totient is φ = 29276304.

The previous prime is 85389281. The next prime is 85389299. The reversal of 85389290 is 9298358.

It is an interprime number because it is at equal distance from previous prime (85389281) and next prime (85389299).

It is not an unprimeable number, because it can be changed into a prime (85389299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 609854 + ... + 609993.

It is an arithmetic number, because the mean of its divisors is an integer number (10978632).

Almost surely, 2^85389290 is an apocalyptic number.

85389290 is an abundant number, since it is smaller than the sum of its proper divisors (90268822).

85389290 is a wasteful number, since it uses less digits than its factorization.

85389290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219861.

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

The square root of 85389290 is about 9240.6325541058. The cubic root of 85389290 is about 440.3531771813.

The spelling of 85389290 in words is "eighty-five million, three hundred eighty-nine thousand, two hundred ninety".