211945941 has 6 divisors (see below), whose sum is σ = 306144150. Its totient is φ = 141297288.

The previous prime is 211945927. The next prime is 211945963. The reversal of 211945941 is 149549112.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 208224900 + 3721041 = 14430^2 + 1929^2 .

It is not a de Polignac number, because 211945941 - 2¹⁹ = 211421653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211945896 and 211945905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211945901) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11774766 + ... + 11774783.

It is an arithmetic number, because the mean of its divisors is an integer number (51024025).

Almost surely, 2^211945941 is an apocalyptic number.

It is an amenable number.

211945941 is a deficient number, since it is larger than the sum of its proper divisors (94198209).

211945941 is a wasteful number, since it uses less digits than its factorization.

211945941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23549555 (or 23549552 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 211945941 is about 14558.3632665214. The cubic root of 211945941 is about 596.2225091817. Note that the first 3 decimals are identical.

The spelling of 211945941 in words is "two hundred eleven million, nine hundred forty-five thousand, nine hundred forty-one".