432990581 has 2 divisors, whose sum is σ = 432990582. Its totient is φ = 432990580.

The previous prime is 432990517. The next prime is 432990583. The reversal of 432990581 is 185099234.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 408646225 + 24344356 = 20215^2 + 4934^2 .

It is a cyclic number.

It is not a de Polignac number, because 432990581 - 2⁶ = 432990517 is a prime.

It is a super-2 number, since 2×432990581² = 374961686469435122, which contains 22 as substring.

Together with 432990583, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (432990583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216495290 + 216495291.

It is an arithmetic number, because the mean of its divisors is an integer number (216495291).

Almost surely, 2^432990581 is an apocalyptic number.

It is an amenable number.

432990581 is a deficient number, since it is larger than the sum of its proper divisors (1).

432990581 is an equidigital number, since it uses as much as digits as its factorization.

432990581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 432990581 is about 20808.4257213274. The cubic root of 432990581 is about 756.5299915725.

The spelling of 432990581 in words is "four hundred thirty-two million, nine hundred ninety thousand, five hundred eighty-one".