398299 has 4 divisors (see below), whose sum is σ = 434520. Its totient is φ = 362080.

The previous prime is 398287. The next prime is 398303. The reversal of 398299 is 992893.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 992893 = 11 ⋅90263.

It is a cyclic number.

It is not a de Polignac number, because 398299 - 2⁵ = 398267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18094 + ... + 18115.

It is an arithmetic number, because the mean of its divisors is an integer number (108630).

2³⁹⁸²⁹⁹ is an apocalyptic number.

398299 is a deficient number, since it is larger than the sum of its proper divisors (36221).

398299 is a wasteful number, since it uses less digits than its factorization.

398299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36220.

The product of its digits is 34992, while the sum is 40.

The square root of 398299 is about 631.1093407643. The cubic root of 398299 is about 73.5760392821.

It can be divided in two parts, 39 and 8299, that added together give a palindrome (8338).

The spelling of 398299 in words is "three hundred ninety-eight thousand, two hundred ninety-nine".