43390441 has 4 divisors (see below), whose sum is σ = 43650432. Its totient is φ = 43130452.

The previous prime is 43390349. The next prime is 43390469. The reversal of 43390441 is 14409334.

43390441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43390441 - 2¹⁷ = 43259369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43390481) 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, 129745 + ... + 130078.

It is an arithmetic number, because the mean of its divisors is an integer number (10912608).

Almost surely, 2^43390441 is an apocalyptic number.

It is an amenable number.

43390441 is a deficient number, since it is larger than the sum of its proper divisors (259991).

43390441 is a wasteful number, since it uses less digits than its factorization.

43390441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259990.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 43390441 is about 6587.1420965393. The cubic root of 43390441 is about 351.3969772815.

Adding to 43390441 its reverse (14409334), we get a palindrome (57799775).

The spelling of 43390441 in words is "forty-three million, three hundred ninety thousand, four hundred forty-one".