211000447 has 16 divisors (see below), whose sum is σ = 255744000. Its totient is φ = 169941888.

The previous prime is 211000423. The next prime is 211000483. The reversal of 211000447 is 744000112.

It is a cyclic number.

It is not a de Polignac number, because 211000447 - 2¹⁹ = 210476159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211000417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104554 + ... + 106552.

It is an arithmetic number, because the mean of its divisors is an integer number (15984000).

Almost surely, 2^211000447 is an apocalyptic number.

211000447 is a deficient number, since it is larger than the sum of its proper divisors (44743553).

211000447 is a wasteful number, since it uses less digits than its factorization.

211000447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2910.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 211000447 is about 14525.8544327003. The cubic root of 211000447 is about 595.3346017155.

Adding to 211000447 its reverse (744000112), we get a palindrome (955000559).

The spelling of 211000447 in words is "two hundred eleven million, four hundred forty-seven", and thus it is an aban number.