430009981 has 2 divisors, whose sum is σ = 430009982. Its totient is φ = 430009980.

The previous prime is 430009973. The next prime is 430010039. The reversal of 430009981 is 189900034.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 306600100 + 123409881 = 17510^2 + 11109^2 .

It is a cyclic number.

It is not a de Polignac number, because 430009981 - 2³ = 430009973 is a prime.

It is a super-2 number, since 2×430009981² = 369817167519240722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (430009901) 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, 215004990 + 215004991.

It is an arithmetic number, because the mean of its divisors is an integer number (215004991).

Almost surely, 2^430009981 is an apocalyptic number.

It is an amenable number.

430009981 is a deficient number, since it is larger than the sum of its proper divisors (1).

430009981 is an equidigital number, since it uses as much as digits as its factorization.

430009981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 430009981 is about 20736.6820152116. The cubic root of 430009981 is about 754.7900713072.

The spelling of 430009981 in words is "four hundred thirty million, nine thousand, nine hundred eighty-one".