85249844 has 6 divisors (see below), whose sum is σ = 149187234. Its totient is φ = 42624920.

The previous prime is 85249841. The next prime is 85249847. The reversal of 85249844 is 44894258.

It is an interprime number because it is at equal distance from previous prime (85249841) and next prime (85249847).

It can be written as a sum of positive squares in only one way, i.e., 82810000 + 2439844 = 9100^2 + 1562^2 .

It is a junction number, because it is equal to n+sod(n) for n = 85249795 and 85249804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85249841) 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 as a sum of consecutive naturals, namely, 10656227 + ... + 10656234.

It is an arithmetic number, because the mean of its divisors is an integer number (24864539).

Almost surely, 2^85249844 is an apocalyptic number.

It is an amenable number.

85249844 is a deficient number, since it is larger than the sum of its proper divisors (63937390).

85249844 is a wasteful number, since it uses less digits than its factorization.

85249844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21312465 (or 21312463 counting only the distinct ones).

The product of its digits is 368640, while the sum is 44.

The square root of 85249844 is about 9233.0842084322. The cubic root of 85249844 is about 440.1133385715.

The spelling of 85249844 in words is "eighty-five million, two hundred forty-nine thousand, eight hundred forty-four".