211049897 has 4 divisors (see below), whose sum is σ = 211080960. Its totient is φ = 211018836.

The previous prime is 211049857. The next prime is 211049921. The reversal of 211049897 is 798940112.

211049897 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 Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211049897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211049857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473 + ... + 20550.

It is an arithmetic number, because the mean of its divisors is an integer number (52770240).

Almost surely, 2^211049897 is an apocalyptic number.

It is an amenable number.

211049897 is a deficient number, since it is larger than the sum of its proper divisors (31063).

211049897 is a wasteful number, since it uses less digits than its factorization.

211049897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31062.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 211049897 is about 14527.5564703773. The cubic root of 211049897 is about 595.3811055610.

The spelling of 211049897 in words is "two hundred eleven million, forty-nine thousand, eight hundred ninety-seven".