211374449 has 16 divisors (see below), whose sum is σ = 261401280. Its totient is φ = 168039360.

The previous prime is 211374419. The next prime is 211374467. The reversal of 211374449 is 944473112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 211374449 - 2²⁴ = 194597233 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (211374419) 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 15 ways as a sum of consecutive naturals, for example, 36182 + ... + 41615.

It is an arithmetic number, because the mean of its divisors is an integer number (16337580).

Almost surely, 2^211374449 is an apocalyptic number.

It is an amenable number.

211374449 is a deficient number, since it is larger than the sum of its proper divisors (50026831).

211374449 is a wasteful number, since it uses less digits than its factorization.

211374449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77840.

The product of its digits is 24192, while the sum is 35.

The square root of 211374449 is about 14538.7223991656. The cubic root of 211374449 is about 595.6861411082.

The spelling of 211374449 in words is "two hundred eleven million, three hundred seventy-four thousand, four hundred forty-nine".