399348 has 18 divisors (see below), whose sum is σ = 1009554. Its totient is φ = 133104.

The previous prime is 399283. The next prime is 399353. The reversal of 399348 is 843993.

It can be written as a sum of positive squares in only one way, i.e., 381924 + 17424 = 618^2 + 132^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 11093 = 399348 / (3 + 9 + 9 + 3 + 4 + 8).

It is a congruent number.

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 in 5 ways as a sum of consecutive naturals, for example, 5511 + ... + 5582.

2³⁹⁹³⁴⁸ is an apocalyptic number.

It is an amenable number.

399348 is an abundant number, since it is smaller than the sum of its proper divisors (610206).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399348 is a wasteful number, since it uses less digits than its factorization.

399348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11103 (or 11098 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 399348 is about 631.9398705573. The cubic root of 399348 is about 73.6405750595.

It can be divided in two parts, 399 and 348, that added together give a palindrome (747).

The spelling of 399348 in words is "three hundred ninety-nine thousand, three hundred forty-eight".