398867 has 8 divisors (see below), whose sum is σ = 480000. Its totient is φ = 323784.

The previous prime is 398863. The next prime is 398887. The reversal of 398867 is 768893.

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

It is a cyclic number.

It is not a de Polignac number, because 398867 - 2² = 398863 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 398867.

It is not an unprimeable number, because it can be changed into a prime (398863) 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, 1367 + ... + 1632.

It is an arithmetic number, because the mean of its divisors is an integer number (60000).

2³⁹⁸⁸⁶⁷ is an apocalyptic number.

398867 is a deficient number, since it is larger than the sum of its proper divisors (81133).

398867 is a wasteful number, since it uses less digits than its factorization.

398867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3025.

The product of its digits is 72576, while the sum is 41.

The square root of 398867 is about 631.5591817083. The cubic root of 398867 is about 73.6109973918.

It can be divided in two parts, 39886 and 7, that added together give a palindrome (39893).

The spelling of 398867 in words is "three hundred ninety-eight thousand, eight hundred sixty-seven".