491996 has 12 divisors (see below), whose sum is σ = 879648. Its totient is φ = 240672.

The previous prime is 491983. The next prime is 492007. The reversal of 491996 is 699194.

It is a congruent number.

It is an unprimeable number.

491996 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1121 + ... + 1496.

It is an arithmetic number, because the mean of its divisors is an integer number (73304).

2⁴⁹¹⁹⁹⁶ is an apocalyptic number.

It is an amenable number.

491996 is a deficient number, since it is larger than the sum of its proper divisors (387652).

491996 is a wasteful number, since it uses less digits than its factorization.

491996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2668 (or 2666 counting only the distinct ones).

The product of its digits is 17496, while the sum is 38.

The square root of 491996 is about 701.4242653345. The cubic root of 491996 is about 78.9442537875.

The spelling of 491996 in words is "four hundred ninety-one thousand, nine hundred ninety-six".