399338 has 4 divisors (see below), whose sum is σ = 599010. Its totient is φ = 199668.

The previous prime is 399283. The next prime is 399353. The reversal of 399338 is 833993.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 833993 = 31 ⋅26903.

It can be written as a sum of positive squares in only one way, i.e., 316969 + 82369 = 563^2 + 287^2 .

It is a junction number, because it is equal to n+sod(n) for n = 399298 and 399307.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 99833 + ... + 99836.

2³⁹⁹³³⁸ is an apocalyptic number.

399338 is a deficient number, since it is larger than the sum of its proper divisors (199672).

399338 is a wasteful number, since it uses less digits than its factorization.

399338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199671.

The product of its digits is 17496, while the sum is 35.

The square root of 399338 is about 631.9319583626. The cubic root of 399338 is about 73.6399603810.

It can be divided in two parts, 399 and 338, that added together give a palindrome (737).

The spelling of 399338 in words is "three hundred ninety-nine thousand, three hundred thirty-eight".