211993883 has 4 divisors (see below), whose sum is σ = 213397968. Its totient is φ = 210589800.

The previous prime is 211993871. The next prime is 211993889. The reversal of 211993883 is 388399112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211993883 - 2⁸ = 211993627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211993889) 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, 701816 + ... + 702117.

It is an arithmetic number, because the mean of its divisors is an integer number (53349492).

Almost surely, 2^211993883 is an apocalyptic number.

211993883 is a deficient number, since it is larger than the sum of its proper divisors (1404085).

211993883 is a wasteful number, since it uses less digits than its factorization.

211993883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404084.

The product of its digits is 93312, while the sum is 44.

The square root of 211993883 is about 14560.0097184034. The cubic root of 211993883 is about 596.2674608086.

The spelling of 211993883 in words is "two hundred eleven million, nine hundred ninety-three thousand, eight hundred eighty-three".