491995 has 8 divisors (see below), whose sum is σ = 674784. Its totient is φ = 337344.

The previous prime is 491983. The next prime is 492007. The reversal of 491995 is 599194.

It is an interprime number because it is at equal distance from previous prime (491983) and next prime (492007).

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

It is not a de Polignac number, because 491995 - 2⁷ = 491867 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6994 + ... + 7063.

It is an arithmetic number, because the mean of its divisors is an integer number (84348).

2⁴⁹¹⁹⁹⁵ is an apocalyptic number.

491995 is a deficient number, since it is larger than the sum of its proper divisors (182789).

491995 is a wasteful number, since it uses less digits than its factorization.

491995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14069.

The product of its digits is 14580, while the sum is 37.

The square root of 491995 is about 701.4235524988. The cubic root of 491995 is about 78.9442003017.

The spelling of 491995 in words is "four hundred ninety-one thousand, nine hundred ninety-five".