83213189 has 2 divisors, whose sum is σ = 83213190. Its totient is φ = 83213188.

The previous prime is 83213183. The next prime is 83213191. The reversal of 83213189 is 98131238.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72760900 + 10452289 = 8530^2 + 3233^2 .

It is a cyclic number.

It is not a de Polignac number, because 83213189 - 2²⁰ = 82164613 is a prime.

Together with 83213191, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83213183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41606594 + 41606595.

It is an arithmetic number, because the mean of its divisors is an integer number (41606595).

Almost surely, 2^83213189 is an apocalyptic number.

It is an amenable number.

83213189 is a deficient number, since it is larger than the sum of its proper divisors (1).

83213189 is an equidigital number, since it uses as much as digits as its factorization.

83213189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 35.

The square root of 83213189 is about 9122.1263420323. The cubic root of 83213189 is about 436.5802199235.

The spelling of 83213189 in words is "eighty-three million, two hundred thirteen thousand, one hundred eighty-nine".