499385 has 4 divisors (see below), whose sum is σ = 599268. Its totient is φ = 399504.

The previous prime is 499363. The next prime is 499391. The reversal of 499385 is 583994.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 583994 = 2 ⋅291997.

It can be written as a sum of positive squares in 2 ways, for example, as 284089 + 215296 = 533^2 + 464^2 .

It is a cyclic number.

It is not a de Polignac number, because 499385 - 2⁶ = 499321 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 499385.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 49934 + ... + 49943.

It is an arithmetic number, because the mean of its divisors is an integer number (149817).

2⁴⁹⁹³⁸⁵ is an apocalyptic number.

It is an amenable number.

499385 is a deficient number, since it is larger than the sum of its proper divisors (99883).

499385 is an equidigital number, since it uses as much as digits as its factorization.

499385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99882.

The product of its digits is 38880, while the sum is 38.

The square root of 499385 is about 706.6717767111. The cubic root of 499385 is about 79.3374975256.

The spelling of 499385 in words is "four hundred ninety-nine thousand, three hundred eighty-five".