491308 has 6 divisors (see below), whose sum is σ = 859796. Its totient is φ = 245652.

The previous prime is 491299. The next prime is 491327. The reversal of 491308 is 803194.

It is an unprimeable number.

491308 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 as a sum of consecutive naturals, namely, 61410 + ... + 61417.

2⁴⁹¹³⁰⁸ is an apocalyptic number.

It is an amenable number.

491308 is a deficient number, since it is larger than the sum of its proper divisors (368488).

491308 is a wasteful number, since it uses less digits than its factorization.

491308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122831 (or 122829 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 491308 is about 700.9336630524. The cubic root of 491308 is about 78.9074384587.

The spelling of 491308 in words is "four hundred ninety-one thousand, three hundred eight".