85539999 has 8 divisors (see below), whose sum is σ = 114399232. Its totient is φ = 56853720.

The previous prime is 85539997. The next prime is 85540003. The reversal of 85539999 is 99993558.

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

It is not a de Polignac number, because 85539999 - 2¹ = 85539997 is a prime.

It is a Duffinian number.

85539999 is a modest number, since divided by 9999 gives 8553 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85539991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42079 + ... + 44064.

It is an arithmetic number, because the mean of its divisors is an integer number (14299904).

Almost surely, 2^85539999 is an apocalyptic number.

85539999 is a deficient number, since it is larger than the sum of its proper divisors (28859233).

85539999 is a wasteful number, since it uses less digits than its factorization.

85539999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86477.

The product of its digits is 3936600, while the sum is 57.

The square root of 85539999 is about 9248.7836497563. The cubic root of 85539999 is about 440.6120940438.

The spelling of 85539999 in words is "eighty-five million, five hundred thirty-nine thousand, nine hundred ninety-nine".