1284499943 has 2 divisors, whose sum is σ = 1284499944. Its totient is φ = 1284499942.

The previous prime is 1284499903. The next prime is 1284499961. The reversal of 1284499943 is 3499944821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1284499943 - 2⁸ = 1284499687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1284499903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642249971 + 642249972.

It is an arithmetic number, because the mean of its divisors is an integer number (642249972).

Almost surely, 2^1284499943 is an apocalyptic number.

1284499943 is a deficient number, since it is larger than the sum of its proper divisors (1).

1284499943 is an equidigital number, since it uses as much as digits as its factorization.

1284499943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2239488, while the sum is 53.

The square root of 1284499943 is about 35839.9210797122. The cubic root of 1284499943 is about 1087.0379256479.

The spelling of 1284499943 in words is "one billion, two hundred eighty-four million, four hundred ninety-nine thousand, nine hundred forty-three".