402000943 has 2 divisors, whose sum is σ = 402000944. Its totient is φ = 402000942.

The previous prime is 402000931. The next prime is 402000971. The reversal of 402000943 is 349000204.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402000943 is a prime.

It is equal to p_21437212 and since 402000943 and 21437212 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402000913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201000471 + 201000472.

It is an arithmetic number, because the mean of its divisors is an integer number (201000472).

Almost surely, 2^402000943 is an apocalyptic number.

402000943 is a deficient number, since it is larger than the sum of its proper divisors (1).

402000943 is an equidigital number, since it uses as much as digits as its factorization.

402000943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 402000943 is about 20049.9611720322. The cubic root of 402000943 is about 738.0328462943.

The spelling of 402000943 in words is "four hundred two million, nine hundred forty-three", and thus it is an aban number.