432267989 has 2 divisors, whose sum is σ = 432267990. Its totient is φ = 432267988.

The previous prime is 432267931. The next prime is 432268009. The reversal of 432267989 is 989762234.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 389470225 + 42797764 = 19735^2 + 6542^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-432267989 is a prime.

It is a super-2 number, since 2×432267989² = 373711228628208242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (432267889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216133994 + 216133995.

It is an arithmetic number, because the mean of its divisors is an integer number (216133995).

Almost surely, 2^432267989 is an apocalyptic number.

It is an amenable number.

432267989 is a deficient number, since it is larger than the sum of its proper divisors (1).

432267989 is an equidigital number, since it uses as much as digits as its factorization.

432267989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 50.

The square root of 432267989 is about 20791.0555047116. The cubic root of 432267989 is about 756.1089147460.

It can be divided in two parts, 43226 and 7989, that added together give a palindrome (51215).

The spelling of 432267989 in words is "four hundred thirty-two million, two hundred sixty-seven thousand, nine hundred eighty-nine".