83189387 has 2 divisors, whose sum is σ = 83189388. Its totient is φ = 83189386.

The previous prime is 83189377. The next prime is 83189423. The reversal of 83189387 is 78398138.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83189387 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (83189377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41594693 + 41594694.

It is an arithmetic number, because the mean of its divisors is an integer number (41594694).

Almost surely, 2^83189387 is an apocalyptic number.

83189387 is a deficient number, since it is larger than the sum of its proper divisors (1).

83189387 is an equidigital number, since it uses as much as digits as its factorization.

83189387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 47.

The square root of 83189387 is about 9120.8216186920. The cubic root of 83189387 is about 436.5385900110.

The spelling of 83189387 in words is "eighty-three million, one hundred eighty-nine thousand, three hundred eighty-seven".