211040749 has 2 divisors, whose sum is σ = 211040750. Its totient is φ = 211040748.

The previous prime is 211040707. The next prime is 211040759. The reversal of 211040749 is 947040112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197402500 + 13638249 = 14050^2 + 3693^2 .

It is a cyclic number.

It is not a de Polignac number, because 211040749 - 2⁹ = 211040237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211040759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105520374 + 105520375.

It is an arithmetic number, because the mean of its divisors is an integer number (105520375).

Almost surely, 2^211040749 is an apocalyptic number.

It is an amenable number.

211040749 is a deficient number, since it is larger than the sum of its proper divisors (1).

211040749 is an equidigital number, since it uses as much as digits as its factorization.

211040749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 211040749 is about 14527.2416170449. The cubic root of 211040749 is about 595.3725031323.

The spelling of 211040749 in words is "two hundred eleven million, forty thousand, seven hundred forty-nine".