83828389 has 2 divisors, whose sum is σ = 83828390. Its totient is φ = 83828388.

The previous prime is 83828387. The next prime is 83828417. The reversal of 83828389 is 98382838.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81450625 + 2377764 = 9025^2 + 1542^2 .

It is a cyclic number.

It is not a de Polignac number, because 83828389 - 2¹ = 83828387 is a prime.

Together with 83828387, 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 (83828383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41914194 + 41914195.

It is an arithmetic number, because the mean of its divisors is an integer number (41914195).

Almost surely, 2^83828389 is an apocalyptic number.

It is an amenable number.

83828389 is a deficient number, since it is larger than the sum of its proper divisors (1).

83828389 is an equidigital number, since it uses as much as digits as its factorization.

83828389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 663552, while the sum is 49.

The square root of 83828389 is about 9155.7844557416. The cubic root of 83828389 is about 437.6534671398.

The spelling of 83828389 in words is "eighty-three million, eight hundred twenty-eight thousand, three hundred eighty-nine".