43630841 has 2 divisors, whose sum is σ = 43630842. Its totient is φ = 43630840.

The previous prime is 43630837. The next prime is 43630843. The reversal of 43630841 is 14803634.

43630841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40005625 + 3625216 = 6325^2 + 1904^2 .

It is a cyclic number.

It is not a de Polignac number, because 43630841 - 2² = 43630837 is a prime.

Together with 43630843, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (43630843) 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 as a sum of consecutive naturals, namely, 21815420 + 21815421.

It is an arithmetic number, because the mean of its divisors is an integer number (21815421).

Almost surely, 2^43630841 is an apocalyptic number.

It is an amenable number.

43630841 is a deficient number, since it is larger than the sum of its proper divisors (1).

43630841 is an equidigital number, since it uses as much as digits as its factorization.

43630841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 43630841 is about 6605.3645622327. The cubic root of 43630841 is about 352.0447413213.

The spelling of 43630841 in words is "forty-three million, six hundred thirty thousand, eight hundred forty-one".