43634113 has 4 divisors (see below), whose sum is σ = 43701588. Its totient is φ = 43566640.

The previous prime is 43634077. The next prime is 43634131. The reversal of 43634113 is 31143634.

It is a happy number.

43634113 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.

It can be written as a sum of positive squares in 2 ways, for example, as 7969329 + 35664784 = 2823^2 + 5972^2 .

It is a cyclic number.

It is not a de Polignac number, because 43634113 - 2¹³ = 43625921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43634153) 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, 32758 + ... + 34063.

It is an arithmetic number, because the mean of its divisors is an integer number (10925397).

Almost surely, 2^43634113 is an apocalyptic number.

It is an amenable number.

43634113 is a deficient number, since it is larger than the sum of its proper divisors (67475).

43634113 is an equidigital number, since it uses as much as digits as its factorization.

43634113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67474.

The product of its digits is 2592, while the sum is 25.

The square root of 43634113 is about 6605.6122350619. The cubic root of 43634113 is about 352.0535413778.

Adding to 43634113 its reverse (31143634), we get a palindrome (74777747).

The spelling of 43634113 in words is "forty-three million, six hundred thirty-four thousand, one hundred thirteen".