83138843 has 2 divisors, whose sum is σ = 83138844. Its totient is φ = 83138842.

The previous prime is 83138801. The next prime is 83138849. The reversal of 83138843 is 34883138.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83138843 - 2¹⁶ = 83073307 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 83138797 and 83138806.

It is not a weakly prime, because it can be changed into another prime (83138849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41569421 + 41569422.

It is an arithmetic number, because the mean of its divisors is an integer number (41569422).

Almost surely, 2^83138843 is an apocalyptic number.

83138843 is a deficient number, since it is larger than the sum of its proper divisors (1).

83138843 is an equidigital number, since it uses as much as digits as its factorization.

83138843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 38.

The square root of 83138843 is about 9118.0503946842. The cubic root of 83138843 is about 436.4501617574.

The spelling of 83138843 in words is "eighty-three million, one hundred thirty-eight thousand, eight hundred forty-three".