432019981 has 2 divisors, whose sum is σ = 432019982. Its totient is φ = 432019980.

The previous prime is 432019961. The next prime is 432020023. The reversal of 432019981 is 189910234.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 281098756 + 150921225 = 16766^2 + 12285^2 .

It is a cyclic number.

It is not a de Polignac number, because 432019981 - 2¹¹ = 432017933 is a prime.

It is a super-2 number, since 2×432019981² = 373282527966480722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 432019981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (432019921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216009990 + 216009991.

It is an arithmetic number, because the mean of its divisors is an integer number (216009991).

Almost surely, 2^432019981 is an apocalyptic number.

It is an amenable number.

432019981 is a deficient number, since it is larger than the sum of its proper divisors (1).

432019981 is an equidigital number, since it uses as much as digits as its factorization.

432019981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 432019981 is about 20785.0903534240. The cubic root of 432019981 is about 755.9642846102.

The spelling of 432019981 in words is "four hundred thirty-two million, nineteen thousand, nine hundred eighty-one".