211199249 has 4 divisors (see below), whose sum is σ = 218012160. Its totient is φ = 204386340.

The previous prime is 211199201. The next prime is 211199251. The reversal of 211199249 is 942991112.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211199249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211199299) 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, 3406409 + ... + 3406470.

It is an arithmetic number, because the mean of its divisors is an integer number (54503040).

Almost surely, 2^211199249 is an apocalyptic number.

It is an amenable number.

211199249 is a deficient number, since it is larger than the sum of its proper divisors (6812911).

211199249 is an equidigital number, since it uses as much as digits as its factorization.

211199249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6812910.

The product of its digits is 11664, while the sum is 38.

The square root of 211199249 is about 14532.6958614016. The cubic root of 211199249 is about 595.5215153139.

The spelling of 211199249 in words is "two hundred eleven million, one hundred ninety-nine thousand, two hundred forty-nine".