390043 has 2 divisors, whose sum is σ = 390044. Its totient is φ = 390042.

The previous prime is 390001. The next prime is 390067. The reversal of 390043 is 340093.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 390043 - 2⁹ = 389531 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 390043.

It is not a weakly prime, because it can be changed into another prime (390083) 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 as a sum of consecutive naturals, namely, 195021 + 195022.

It is an arithmetic number, because the mean of its divisors is an integer number (195022).

2³⁹⁰⁰⁴³ is an apocalyptic number.

390043 is a deficient number, since it is larger than the sum of its proper divisors (1).

390043 is an equidigital number, since it uses as much as digits as its factorization.

390043 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 390043 is about 624.5342264440. The cubic root of 390043 is about 73.0641208058.

The spelling of 390043 in words is "three hundred ninety thousand, forty-three".