432678217 has 4 divisors (see below), whose sum is σ = 437539860. Its totient is φ = 427816576.

The previous prime is 432678209. The next prime is 432678223. The reversal of 432678217 is 712876234.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31236921 + 401441296 = 5589^2 + 20036^2 .

It is a cyclic number.

It is not a de Polignac number, because 432678217 - 2³ = 432678209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 432678217.

It is not an unprimeable number, because it can be changed into a prime (432678817) 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 3 ways as a sum of consecutive naturals, for example, 2430688 + ... + 2430865.

It is an arithmetic number, because the mean of its divisors is an integer number (109384965).

Almost surely, 2^432678217 is an apocalyptic number.

It is an amenable number.

432678217 is a deficient number, since it is larger than the sum of its proper divisors (4861643).

432678217 is an equidigital number, since it uses as much as digits as its factorization.

432678217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4861642.

The product of its digits is 112896, while the sum is 40.

The square root of 432678217 is about 20800.9186575978. The cubic root of 432678217 is about 756.3480248866.

The spelling of 432678217 in words is "four hundred thirty-two million, six hundred seventy-eight thousand, two hundred seventeen".