499987000085 has 16 divisors (see below), whose sum is σ = 636238757232. Its totient is φ = 375891225600.

The previous prime is 499987000063. The next prime is 499987000091. The reversal of 499987000085 is 580000789994.

499987000085 = 499993² + 499994².

It can be written as a sum of positive squares in 8 ways, for example, as 42386162641 + 457600837444 = 205879^2 + 676462^2 .

It is not a de Polignac number, because 499987000085 - 2²² = 499982805781 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 499986999988 and 499987000033.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4393286 + ... + 4505655.

It is an arithmetic number, because the mean of its divisors is an integer number (39764922327).

Almost surely, 2^499987000085 is an apocalyptic number.

499987000085 is the 499994-th centered square number.

It is an amenable number.

499987000085 is a deficient number, since it is larger than the sum of its proper divisors (136251757147).

499987000085 is a wasteful number, since it uses less digits than its factorization.

499987000085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8899624.

The product of its (nonzero) digits is 6531840, while the sum is 59.

The spelling of 499987000085 in words is "four hundred ninety-nine billion, nine hundred eighty-seven million, eighty-five", and thus it is an aban number.