398683 has 2 divisors, whose sum is σ = 398684. Its totient is φ = 398682.

The previous prime is 398681. The next prime is 398693. The reversal of 398683 is 386893.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 398683 - 2¹ = 398681 is a prime.

Together with 398681, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (398681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199341 + 199342.

It is an arithmetic number, because the mean of its divisors is an integer number (199342).

2³⁹⁸⁶⁸³ is an apocalyptic number.

398683 is a deficient number, since it is larger than the sum of its proper divisors (1).

398683 is an equidigital number, since it uses as much as digits as its factorization.

398683 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 37.

The square root of 398683 is about 631.4134936791. The cubic root of 398683 is about 73.5996765699.

It can be divided in two parts, 398 and 683, that added together give a triangular number (1081 = T₄₆).

The spelling of 398683 in words is "three hundred ninety-eight thousand, six hundred eighty-three".