491212 has 12 divisors (see below), whose sum is σ = 883120. Its totient is φ = 238896.

The previous prime is 491201. The next prime is 491213. The reversal of 491212 is 212194.

It is a self number, because there is not a number n which added to its sum of digits gives 491212.

It is not an unprimeable number, because it can be changed into a prime (491213) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1512 + ... + 1807.

2⁴⁹¹²¹² is an apocalyptic number.

It is an amenable number.

491212 is a deficient number, since it is larger than the sum of its proper divisors (391908).

491212 is a wasteful number, since it uses less digits than its factorization.

491212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3360 (or 3358 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

The square root of 491212 is about 700.8651796173. The cubic root of 491212 is about 78.9022987042.

It can be divided in two parts, 491 and 212, that added together give a triangular number (703 = T₃₇).

The spelling of 491212 in words is "four hundred ninety-one thousand, two hundred twelve".