398143 has 2 divisors, whose sum is σ = 398144. Its totient is φ = 398142.

The previous prime is 398129. The next prime is 398149. The reversal of 398143 is 341893.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-398143 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199071 + 199072.

It is an arithmetic number, because the mean of its divisors is an integer number (199072).

2³⁹⁸¹⁴³ is an apocalyptic number.

398143 is a deficient number, since it is larger than the sum of its proper divisors (1).

398143 is an equidigital number, since it uses as much as digits as its factorization.

398143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 28.

The square root of 398143 is about 630.9857367643. The cubic root of 398143 is about 73.5664322943.

The spelling of 398143 in words is "three hundred ninety-eight thousand, one hundred forty-three".