211484389 has 2 divisors, whose sum is σ = 211484390. Its totient is φ = 211484388.

The previous prime is 211484321. The next prime is 211484401. The reversal of 211484389 is 983484112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144408289 + 67076100 = 12017^2 + 8190^2 .

It is a cyclic number.

It is not a de Polignac number, because 211484389 - 2¹³ = 211476197 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211484309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105742194 + 105742195.

It is an arithmetic number, because the mean of its divisors is an integer number (105742195).

Almost surely, 2^211484389 is an apocalyptic number.

It is an amenable number.

211484389 is a deficient number, since it is larger than the sum of its proper divisors (1).

211484389 is an equidigital number, since it uses as much as digits as its factorization.

211484389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 40.

The square root of 211484389 is about 14542.5028451089. The cubic root of 211484389 is about 595.7893992263.

The spelling of 211484389 in words is "two hundred eleven million, four hundred eighty-four thousand, three hundred eighty-nine".