398487 has 8 divisors (see below), whose sum is σ = 559360. Its totient is φ = 251640.

The previous prime is 398477. The next prime is 398491. The reversal of 398487 is 784893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 398487 - 2⁴ = 398471 is a prime.

It is a nialpdrome in base 9.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 398487.

It is not an unprimeable number, because it can be changed into a prime (398407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3439 + ... + 3552.

It is an arithmetic number, because the mean of its divisors is an integer number (69920).

2³⁹⁸⁴⁸⁷ is an apocalyptic number.

398487 is a deficient number, since it is larger than the sum of its proper divisors (160873).

398487 is a wasteful number, since it uses less digits than its factorization.

398487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7013.

The product of its digits is 48384, while the sum is 39.

The square root of 398487 is about 631.2582672726. The cubic root of 398487 is about 73.5876136016.

The spelling of 398487 in words is "three hundred ninety-eight thousand, four hundred eighty-seven".