983791 has 2 divisors, whose sum is σ = 983792. Its totient is φ = 983790.

The previous prime is 983789. The next prime is 983803. The reversal of 983791 is 197389.

It is a weak prime.

It is an emirp because it is prime and its reverse (197389) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 983791 - 2¹ = 983789 is a prime.

Together with 983789, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 983791.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (983701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 491895 + 491896.

It is an arithmetic number, because the mean of its divisors is an integer number (491896).

2⁹⁸³⁷⁹¹ is an apocalyptic number.

983791 is a deficient number, since it is larger than the sum of its proper divisors (1).

983791 is an equidigital number, since it uses as much as digits as its factorization.

983791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 37.

The square root of 983791 is about 991.8623896489. The cubic root of 983791 is about 99.4567541839.

The spelling of 983791 in words is "nine hundred eighty-three thousand, seven hundred ninety-one".