212449 has 4 divisors (see below), whose sum is σ = 224964. Its totient is φ = 199936.

The previous prime is 212447. The next prime is 212453. The reversal of 212449 is 944212.

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

It can be written as a sum of positive squares in 2 ways, for example, as 140625 + 71824 = 375^2 + 268^2 .

It is a cyclic number.

It is not a de Polignac number, because 212449 - 2¹ = 212447 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6232 + ... + 6265.

It is an arithmetic number, because the mean of its divisors is an integer number (56241).

2²¹²⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

212449 is a deficient number, since it is larger than the sum of its proper divisors (12515).

212449 is a wasteful number, since it uses less digits than its factorization.

212449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12514.

The product of its digits is 576, while the sum is 22.

The square root of 212449 is about 460.9219022785. The cubic root of 212449 is about 59.6693852816.

The spelling of 212449 in words is "two hundred twelve thousand, four hundred forty-nine".