499405 has 4 divisors (see below), whose sum is σ = 599292. Its totient is φ = 399520.

The previous prime is 499403. The next prime is 499423. The reversal of 499405 is 504994.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 393129 + 106276 = 627^2 + 326^2 .

It is not a de Polignac number, because 499405 - 2¹ = 499403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499403) 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 3 ways as a sum of consecutive naturals, for example, 49936 + ... + 49945.

It is an arithmetic number, because the mean of its divisors is an integer number (149823).

2⁴⁹⁹⁴⁰⁵ is an apocalyptic number.

It is an amenable number.

499405 is a deficient number, since it is larger than the sum of its proper divisors (99887).

499405 is an equidigital number, since it uses as much as digits as its factorization.

499405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99886.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 499405 is about 706.6859274105. The cubic root of 499405 is about 79.3385566475.

The spelling of 499405 in words is "four hundred ninety-nine thousand, four hundred five".