490811 has 4 divisors (see below), whose sum is σ = 502824. Its totient is φ = 478800.

The previous prime is 490783. The next prime is 490829. The reversal of 490811 is 118094.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-490811 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 490811.

It is not an unprimeable number, because it can be changed into a prime (490891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5945 + ... + 6026.

It is an arithmetic number, because the mean of its divisors is an integer number (125706).

2⁴⁹⁰⁸¹¹ is an apocalyptic number.

490811 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

490811 is a deficient number, since it is larger than the sum of its proper divisors (12013).

490811 is a wasteful number, since it uses less digits than its factorization.

490811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12012.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 490811 is about 700.5790462182. The cubic root of 490811 is about 78.8808222776.

The spelling of 490811 in words is "four hundred ninety thousand, eight hundred eleven".