85993844 has 6 divisors (see below), whose sum is σ = 150489234. Its totient is φ = 42996920.

The previous prime is 85993807. The next prime is 85993891. The reversal of 85993844 is 44839958.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 58828900 + 27164944 = 7670^2 + 5212^2 .

It is a junction number, because it is equal to n+sod(n) for n = 85993792 and 85993801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10749227 + ... + 10749234.

It is an arithmetic number, because the mean of its divisors is an integer number (25081539).

Almost surely, 2^85993844 is an apocalyptic number.

It is an amenable number.

85993844 is a deficient number, since it is larger than the sum of its proper divisors (64495390).

85993844 is a wasteful number, since it uses less digits than its factorization.

85993844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21498465 (or 21498463 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 50.

The square root of 85993844 is about 9273.2865802799. The cubic root of 85993844 is about 441.3899639718.

The spelling of 85993844 in words is "eighty-five million, nine hundred ninety-three thousand, eight hundred forty-four".