85259999 has 8 divisors (see below), whose sum is σ = 93093840. Its totient is φ = 77440000.

The previous prime is 85259963. The next prime is 85260017. The reversal of 85259999 is 99995258.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85259999 - 2¹² = 85255903 is a prime.

It is a super-3 number, since 3×85259999³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

85259999 is a modest number, since divided by 9999 gives 8525 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85259929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12749 + ... + 18249.

It is an arithmetic number, because the mean of its divisors is an integer number (11636730).

Almost surely, 2^85259999 is an apocalyptic number.

85259999 is a deficient number, since it is larger than the sum of its proper divisors (7833841).

85259999 is a wasteful number, since it uses less digits than its factorization.

85259999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6921.

The product of its digits is 2624400, while the sum is 56.

The square root of 85259999 is about 9233.6341166412. The cubic root of 85259999 is about 440.1308133776.

The spelling of 85259999 in words is "eighty-five million, two hundred fifty-nine thousand, nine hundred ninety-nine".