432891 has 8 divisors (see below), whose sum is σ = 641360. Its totient is φ = 288576.

The previous prime is 432869. The next prime is 432893. The reversal of 432891 is 198234.

It is not a de Polignac number, because 432891 - 2¹⁰ = 431867 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 16033 = 432891 / (4 + 3 + 2 + 8 + 9 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (432893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7990 + ... + 8043.

It is an arithmetic number, because the mean of its divisors is an integer number (80170).

2⁴³²⁸⁹¹ is an apocalyptic number.

432891 is a deficient number, since it is larger than the sum of its proper divisors (208469).

432891 is a wasteful number, since it uses less digits than its factorization.

432891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16042 (or 16036 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 432891 is about 657.9445265370. The cubic root of 432891 is about 75.6471990473.

The spelling of 432891 in words is "four hundred thirty-two thousand, eight hundred ninety-one".