43909434 has 12 divisors (see below), whose sum is σ = 95137146. Its totient is φ = 14636472.

The previous prime is 43909433. The next prime is 43909457. The reversal of 43909434 is 43490934.

It can be written as a sum of positive squares in only one way, i.e., 28676025 + 15233409 = 5355^2 + 3903^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (43909433) 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 5 ways as a sum of consecutive naturals, for example, 1219689 + ... + 1219724.

Almost surely, 2^43909434 is an apocalyptic number.

43909434 is an abundant number, since it is smaller than the sum of its proper divisors (51227712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43909434 is a wasteful number, since it uses less digits than its factorization.

43909434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2439421 (or 2439418 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 43909434 is about 6626.4193951183. The cubic root of 43909434 is about 352.7924478153.

It can be divided in two parts, 4390 and 9434, that added together give a cube (13824 = 24³).

The spelling of 43909434 in words is "forty-three million, nine hundred nine thousand, four hundred thirty-four".