398835 has 12 divisors (see below), whose sum is σ = 691392. Its totient is φ = 212688.

The previous prime is 398833. The next prime is 398857. The reversal of 398835 is 538893.

It is not a de Polignac number, because 398835 - 2¹ = 398833 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

398835 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 398835.

It is not an unprimeable number, because it can be changed into a prime (398833) 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 in 11 ways as a sum of consecutive naturals, for example, 4387 + ... + 4476.

It is an arithmetic number, because the mean of its divisors is an integer number (57616).

2³⁹⁸⁸³⁵ is an apocalyptic number.

398835 is a deficient number, since it is larger than the sum of its proper divisors (292557).

398835 is a wasteful number, since it uses less digits than its factorization.

398835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8874 (or 8871 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 398835 is about 631.5338470739. The cubic root of 398835 is about 73.6090288034.

The spelling of 398835 in words is "three hundred ninety-eight thousand, eight hundred thirty-five".