1000434389 has 2 divisors, whose sum is σ = 1000434390. Its totient is φ = 1000434388.

The previous prime is 1000434371. The next prime is 1000434439. The reversal of 1000434389 is 9834340001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1000140625 + 293764 = 31625^2 + 542^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000434389 - 2⁸ = 1000434133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000434319) 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, 500217194 + 500217195.

It is an arithmetic number, because the mean of its divisors is an integer number (500217195).

Almost surely, 2^1000434389 is an apocalyptic number.

It is an amenable number.

1000434389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000434389 is an equidigital number, since it uses as much as digits as its factorization.

1000434389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 1000434389 is about 31629.6441491206. The cubic root of 1000434389 is about 1000.1447753724.

The spelling of 1000434389 in words is "one billion, four hundred thirty-four thousand, three hundred eighty-nine".