398395 has 16 divisors (see below), whose sum is σ = 522720. Its totient is φ = 290304.

The previous prime is 398393. The next prime is 398407. The reversal of 398395 is 593893.

398395 = T₂₅ + T₂₆ + ... + T₁₃₃.

It is a cyclic number.

It is not a de Polignac number, because 398395 - 2¹ = 398393 is a prime.

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (398393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3601 + ... + 3709.

It is an arithmetic number, because the mean of its divisors is an integer number (32670).

2³⁹⁸³⁹⁵ is an apocalyptic number.

398395 is a deficient number, since it is larger than the sum of its proper divisors (124325).

398395 is a wasteful number, since it uses less digits than its factorization.

398395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174.

The product of its digits is 29160, while the sum is 37.

The square root of 398395 is about 631.1853927334. The cubic root of 398395 is about 73.5819500279.

The spelling of 398395 in words is "three hundred ninety-eight thousand, three hundred ninety-five".