400339 has 2 divisors, whose sum is σ = 400340. Its totient is φ = 400338.

The previous prime is 400331. The next prime is 400381. The reversal of 400339 is 933004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400339 - 2³ = 400331 is a prime.

It is a Chen prime.

400339 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (400331) by changing a digit.

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, 200169 + 200170.

It is an arithmetic number, because the mean of its divisors is an integer number (200170).

2⁴⁰⁰³³⁹ is an apocalyptic number.

400339 is a deficient number, since it is larger than the sum of its proper divisors (1).

400339 is an equidigital number, since it uses as much as digits as its factorization.

400339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 400339 is about 632.7234783063. The cubic root of 400339 is about 73.7014388734.

The spelling of 400339 in words is "four hundred thousand, three hundred thirty-nine".