211238594449 has 3 divisors (see below), whose sum is σ = 211239054057. Its totient is φ = 211238134842.

The previous prime is 211238594443. The next prime is 211238594503. The reversal of 211238594449 is 944495832112.

The square root of 211238594449 is 459607.

It is a perfect power (a square), and thus also a powerful number.

211238594449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 211238594449 - 2⁷ = 211238594321 is a prime.

It is a super-2 number, since 2×211238594449² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211238594396 and 211238594405.

It is not an unprimeable number, because it can be changed into a prime (211238594443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 229804 + ... + 689410.

It is an arithmetic number, because the mean of its divisors is an integer number (70413018019).

Almost surely, 2^211238594449 is an apocalyptic number.

211238594449 is the 459607-th square number.

211238594449 is the 229804-th centered octagonal number.

It is an amenable number.

211238594449 is a deficient number, since it is larger than the sum of its proper divisors (459608).

211238594449 is an frugal number, since it uses more digits than its factorization.

211238594449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919214 (or 459607 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 52.

The spelling of 211238594449 in words is "two hundred eleven billion, two hundred thirty-eight million, five hundred ninety-four thousand, four hundred forty-nine".