432043981 has 2 divisors, whose sum is σ = 432043982. Its totient is φ = 432043980.

The previous prime is 432043979. The next prime is 432044027. The reversal of 432043981 is 189340234.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 286455625 + 145588356 = 16925^2 + 12066^2 .

It is a cyclic number.

It is not a de Polignac number, because 432043981 - 2¹ = 432043979 is a prime.

It is a super-2 number, since 2×432043981² = 373324003036656722, which contains 22 as substring.

Together with 432043979, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (432043901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216021990 + 216021991.

It is an arithmetic number, because the mean of its divisors is an integer number (216021991).

Almost surely, 2^432043981 is an apocalyptic number.

It is an amenable number.

432043981 is a deficient number, since it is larger than the sum of its proper divisors (1).

432043981 is an equidigital number, since it uses as much as digits as its factorization.

432043981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 432043981 is about 20785.6676823238. The cubic root of 432043981 is about 755.9782830422.

The spelling of 432043981 in words is "four hundred thirty-two million, forty-three thousand, nine hundred eighty-one".