83791 has 2 divisors, whose sum is σ = 83792. Its totient is φ = 83790.

The previous prime is 83777. The next prime is 83813. The reversal of 83791 is 19738.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83791 - 2⁷ = 83663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41895 + 41896.

It is an arithmetic number, because the mean of its divisors is an integer number (41896).

2⁸³⁷⁹¹ is an apocalyptic number.

83791 is a deficient number, since it is larger than the sum of its proper divisors (1).

83791 is an equidigital number, since it uses as much as digits as its factorization.

83791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 28.

The square root of 83791 is about 289.4667511131. The cubic root of 83791 is about 43.7588390304.

It can be divided in two parts, 837 and 91, that multiplied together give a palindrome (76167).

The spelling of 83791 in words is "eighty-three thousand, seven hundred ninety-one".