328399 has 4 divisors (see below), whose sum is σ = 330264. Its totient is φ = 326536.

The previous prime is 328397. The next prime is 328411. The reversal of 328399 is 993823.

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 328399 - 2¹ = 328397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328397) 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, 637 + ... + 1030.

It is an arithmetic number, because the mean of its divisors is an integer number (82566).

2³²⁸³⁹⁹ is an apocalyptic number.

328399 is a deficient number, since it is larger than the sum of its proper divisors (1865).

328399 is a wasteful number, since it uses less digits than its factorization.

328399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1864.

The product of its digits is 11664, while the sum is 34.

The square root of 328399 is about 573.0610787691. The cubic root of 328399 is about 68.9922976770.

It can be divided in two parts, 328 and 399, that added together give a palindrome (727).

The spelling of 328399 in words is "three hundred twenty-eight thousand, three hundred ninety-nine".