85801844 has 6 divisors (see below), whose sum is σ = 150153234. Its totient is φ = 42900920.

The previous prime is 85801841. The next prime is 85801847. The reversal of 85801844 is 44810858.

It is an interprime number because it is at equal distance from previous prime (85801841) and next prime (85801847).

It can be written as a sum of positive squares in only one way, i.e., 84860944 + 940900 = 9212^2 + 970^2 .

It is a junction number, because it is equal to n+sod(n) for n = 85801798 and 85801807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85801841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10725227 + ... + 10725234.

It is an arithmetic number, because the mean of its divisors is an integer number (25025539).

Almost surely, 2^85801844 is an apocalyptic number.

It is an amenable number.

85801844 is a deficient number, since it is larger than the sum of its proper divisors (64351390).

85801844 is a wasteful number, since it uses less digits than its factorization.

85801844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21450465 (or 21450463 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 38.

The square root of 85801844 is about 9262.9284786184. The cubic root of 85801844 is about 441.0612194189.

The spelling of 85801844 in words is "eighty-five million, eight hundred one thousand, eight hundred forty-four".