85099839 has 16 divisors (see below), whose sum is σ = 129164544. Its totient is φ = 49332800.

The previous prime is 85099789. The next prime is 85099853. The reversal of 85099839 is 93899058.

It is not a de Polignac number, because 85099839 - 2⁸ = 85099583 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85099791 and 85099800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85099039) 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 15 ways as a sum of consecutive naturals, for example, 55302 + ... + 56819.

It is an arithmetic number, because the mean of its divisors is an integer number (8072784).

Almost surely, 2^85099839 is an apocalyptic number.

85099839 is a deficient number, since it is larger than the sum of its proper divisors (44064705).

85099839 is a wasteful number, since it uses less digits than its factorization.

85099839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112158.

The product of its (nonzero) digits is 699840, while the sum is 51.

The square root of 85099839 is about 9224.9573982756. The cubic root of 85099839 is about 439.8550469491.

The spelling of 85099839 in words is "eighty-five million, ninety-nine thousand, eight hundred thirty-nine".