983813 has 2 divisors, whose sum is σ = 983814. Its totient is φ = 983812.

The previous prime is 983809. The next prime is 983819. The reversal of 983813 is 318389.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 917764 + 66049 = 958^2 + 257^2 .

It is a cyclic number.

It is not a de Polignac number, because 983813 - 2² = 983809 is a prime.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 983813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (983819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 491906 + 491907.

It is an arithmetic number, because the mean of its divisors is an integer number (491907).

2⁹⁸³⁸¹³ is an apocalyptic number.

It is an amenable number.

983813 is a deficient number, since it is larger than the sum of its proper divisors (1).

983813 is an equidigital number, since it uses as much as digits as its factorization.

983813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 32.

The square root of 983813 is about 991.8734798350. The cubic root of 983813 is about 99.4574955447.

The spelling of 983813 in words is "nine hundred eighty-three thousand, eight hundred thirteen".