398555 has 8 divisors (see below), whose sum is σ = 484800. Its totient is φ = 314496.

The previous prime is 398549. The next prime is 398557. The reversal of 398555 is 555893.

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 398555 - 2⁴ = 398539 is a prime.

It is a d-powerful number, because it can be written as 3 + 9² + 5⁴ + 8⁴ + 5⁵ + 5⁸ .

It is not an unprimeable number, because it can be changed into a prime (398557) 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, 110 + ... + 899.

It is an arithmetic number, because the mean of its divisors is an integer number (60600).

2³⁹⁸⁵⁵⁵ is an apocalyptic number.

398555 is a deficient number, since it is larger than the sum of its proper divisors (86245).

398555 is a wasteful number, since it uses less digits than its factorization.

398555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093.

The product of its digits is 27000, while the sum is 35.

The square root of 398555 is about 631.3121256558. The cubic root of 398555 is about 73.5917991611.

The spelling of 398555 in words is "three hundred ninety-eight thousand, five hundred fifty-five".