399043 has 2 divisors, whose sum is σ = 399044. Its totient is φ = 399042.

The previous prime is 399031. The next prime is 399059. The reversal of 399043 is 340993.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 399043 - 2¹³ = 390851 is a prime.

399043 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (399023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199521 + 199522.

It is an arithmetic number, because the mean of its divisors is an integer number (199522).

2³⁹⁹⁰⁴³ is an apocalyptic number.

399043 is a deficient number, since it is larger than the sum of its proper divisors (1).

399043 is an equidigital number, since it uses as much as digits as its factorization.

399043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 399043 is about 631.6985040350. The cubic root of 399043 is about 73.6218227467.

The spelling of 399043 in words is "three hundred ninety-nine thousand, forty-three".