398086 has 16 divisors (see below), whose sum is σ = 656208. Its totient is φ = 180000.

The previous prime is 398077. The next prime is 398087. The reversal of 398086 is 680893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398087) by changing a digit.

398086 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1461 + ... + 1711.

It is an arithmetic number, because the mean of its divisors is an integer number (41013).

2³⁹⁸⁰⁸⁶ is an apocalyptic number.

398086 is a deficient number, since it is larger than the sum of its proper divisors (258122).

398086 is a wasteful number, since it uses less digits than its factorization.

398086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 398086 is about 630.9405677241. The cubic root of 398086 is about 73.5629214227.

It can be divided in two parts, 3 and 98086, that added together give a palindrome (98089).

The spelling of 398086 in words is "three hundred ninety-eight thousand, eighty-six".