491012 has 6 divisors (see below), whose sum is σ = 859278. Its totient is φ = 245504.

The previous prime is 491003. The next prime is 491039. The reversal of 491012 is 210194.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 379456 + 111556 = 616^2 + 334^2 .

It is an unprimeable number.

491012 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 as a sum of consecutive naturals, namely, 61373 + ... + 61380.

It is an arithmetic number, because the mean of its divisors is an integer number (143213).

2⁴⁹¹⁰¹² is an apocalyptic number.

It is an amenable number.

491012 is a deficient number, since it is larger than the sum of its proper divisors (368266).

491012 is a wasteful number, since it uses less digits than its factorization.

491012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122757 (or 122755 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 491012 is about 700.7224842975. The cubic root of 491012 is about 78.8915887311.

The spelling of 491012 in words is "four hundred ninety-one thousand, twelve".