499995 has 24 divisors (see below), whose sum is σ = 891072. Its totient is φ = 259200.

The previous prime is 499979. The next prime is 500009. The reversal of 499995 is 599994.

It is a happy number.

It is not a de Polignac number, because 499995 - 2⁴ = 499979 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 499995.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1710 + ... + 1980.

It is an arithmetic number, because the mean of its divisors is an integer number (37128).

2⁴⁹⁹⁹⁹⁵ is an apocalyptic number.

499995 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

499995 is a deficient number, since it is larger than the sum of its proper divisors (391077).

499995 is a wasteful number, since it uses less digits than its factorization.

499995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323 (or 320 counting only the distinct ones).

The product of its digits is 131220, while the sum is 45.

The square root of 499995 is about 707.1032456438. The cubic root of 499995 is about 79.3697880307.

499995 divided by its sum of digits (45) gives a palindrome (11111).

Subtracting 499995 from its reverse (599994), we obtain a palindrome (99999).

It can be divided in two parts, 4 and 99995, that added together give a palindrome (99999).

The spelling of 499995 in words is "four hundred ninety-nine thousand, nine hundred ninety-five".