43434321 has 16 divisors (see below), whose sum is σ = 67120128. Its totient is φ = 24469200.

The previous prime is 43434319. The next prime is 43434329. The reversal of 43434321 is 12343434.

43434321 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 43434321 - 2¹ = 43434319 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 43434291 and 43434300.

It is not an unprimeable number, because it can be changed into a prime (43434329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13075 + ... + 16056.

It is an arithmetic number, because the mean of its divisors is an integer number (4195008).

Almost surely, 2^43434321 is an apocalyptic number.

It is an amenable number.

43434321 is a deficient number, since it is larger than the sum of its proper divisors (23685807).

43434321 is a wasteful number, since it uses less digits than its factorization.

43434321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29212.

The product of its digits is 3456, while the sum is 24.

The square root of 43434321 is about 6590.4719861327. The cubic root of 43434321 is about 351.5153912621.

Adding to 43434321 its reverse (12343434), we get a palindrome (55777755).

The spelling of 43434321 in words is "forty-three million, four hundred thirty-four thousand, three hundred twenty-one".