211964 has 12 divisors (see below), whose sum is σ = 390600. Its totient is φ = 100368.

The previous prime is 211949. The next prime is 211969. The reversal of 211964 is 469112.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1319 + ... + 1470.

It is an arithmetic number, because the mean of its divisors is an integer number (32550).

2²¹¹⁹⁶⁴ is an apocalyptic number.

It is an amenable number.

211964 is a deficient number, since it is larger than the sum of its proper divisors (178636).

211964 is a wasteful number, since it uses less digits than its factorization.

211964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2812 (or 2810 counting only the distinct ones).

The product of its digits is 432, while the sum is 23.

The square root of 211964 is about 460.3954821672. The cubic root of 211964 is about 59.6239442551.

The spelling of 211964 in words is "two hundred eleven thousand, nine hundred sixty-four".