85439250 has 192 divisors, whose sum is σ = 261660672. Its totient is φ = 19958400.

The previous prime is 85439239. The next prime is 85439251. The reversal of 85439250 is 5293458.

It is not an unprimeable number, because it can be changed into a prime (85439251) by changing a digit.

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 in 95 ways as a sum of consecutive naturals, for example, 672687 + ... + 672813.

It is an arithmetic number, because the mean of its divisors is an integer number (1362816).

Almost surely, 2^85439250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85439250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130830336).

85439250 is an abundant number, since it is smaller than the sum of its proper divisors (176221422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85439250 is a wasteful number, since it uses less digits than its factorization.

85439250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 85439250 is about 9243.3354369513. The cubic root of 85439250 is about 440.4390417962.

It can be divided in two parts, 854 and 39250, that added together give a palindrome (40104).

The spelling of 85439250 in words is "eighty-five million, four hundred thirty-nine thousand, two hundred fifty".