398495 has 4 divisors (see below), whose sum is σ = 478200. Its totient is φ = 318792.

The previous prime is 398491. The next prime is 398509. The reversal of 398495 is 594893.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 398495 - 2² = 398491 is a prime.

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 398495.

It is not an unprimeable number, because it can be changed into a prime (398491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39845 + ... + 39854.

It is an arithmetic number, because the mean of its divisors is an integer number (119550).

2³⁹⁸⁴⁹⁵ is an apocalyptic number.

398495 is a deficient number, since it is larger than the sum of its proper divisors (79705).

398495 is an equidigital number, since it uses as much as digits as its factorization.

398495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79704.

The product of its digits is 38880, while the sum is 38.

The square root of 398495 is about 631.2646037915. The cubic root of 398495 is about 73.5881060451.

The spelling of 398495 in words is "three hundred ninety-eight thousand, four hundred ninety-five".