43440434 has 8 divisors (see below), whose sum is σ = 67407660. Its totient is φ = 20971216.

The previous prime is 43440433. The next prime is 43440451. The reversal of 43440434 is 43404434.

43440434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 39250225 + 4190209 = 6265^2 + 2047^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×43440434² = 3774142612216712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (43440433) 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, 374429 + ... + 374544.

Almost surely, 2^43440434 is an apocalyptic number.

43440434 is a deficient number, since it is larger than the sum of its proper divisors (23967226).

43440434 is a wasteful number, since it uses less digits than its factorization.

43440434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749004.

The product of its (nonzero) digits is 9216, while the sum is 26.

The square root of 43440434 is about 6590.9357454006. The cubic root of 43440434 is about 351.5318813920.

Adding to 43440434 its reverse (43404434), we get a palindrome (86844868).

The spelling of 43440434 in words is "forty-three million, four hundred forty thousand, four hundred thirty-four".