211004449 has 2 divisors, whose sum is σ = 211004450. Its totient is φ = 211004448.

The previous prime is 211004447. The next prime is 211004471. The reversal of 211004449 is 944400112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192238225 + 18766224 = 13865^2 + 4332^2 .

It is a cyclic number.

It is not a de Polignac number, because 211004449 - 2¹ = 211004447 is a prime.

Together with 211004447, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (211004447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105502224 + 105502225.

It is an arithmetic number, because the mean of its divisors is an integer number (105502225).

Almost surely, 2^211004449 is an apocalyptic number.

It is an amenable number.

211004449 is a deficient number, since it is larger than the sum of its proper divisors (1).

211004449 is an equidigital number, since it uses as much as digits as its factorization.

211004449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 211004449 is about 14525.9921864222. The cubic root of 211004449 is about 595.3383655527.

The spelling of 211004449 in words is "two hundred eleven million, four thousand, four hundred forty-nine".