399343 has 8 divisors (see below), whose sum is σ = 462240. Its totient is φ = 337920.

The previous prime is 399283. The next prime is 399353. The reversal of 399343 is 343993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 399343 - 2¹³ = 391151 is a prime.

It is a Duffinian number.

399343 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303 + ... + 943.

It is an arithmetic number, because the mean of its divisors is an integer number (57780).

2³⁹⁹³⁴³ is an apocalyptic number.

399343 is a deficient number, since it is larger than the sum of its proper divisors (62897).

399343 is an equidigital number, since it uses as much as digits as its factorization.

399343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737.

The product of its digits is 8748, while the sum is 31.

The square root of 399343 is about 631.9359144723. The cubic root of 399343 is about 73.6402677215.

The spelling of 399343 in words is "three hundred ninety-nine thousand, three hundred forty-three".