43890241 has 2 divisors, whose sum is σ = 43890242. Its totient is φ = 43890240.

The previous prime is 43890211. The next prime is 43890289. The reversal of 43890241 is 14209834.

43890241 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41873841 + 2016400 = 6471^2 + 1420^2 .

It is a cyclic number.

It is not a de Polignac number, because 43890241 - 2¹⁷ = 43759169 is a prime.

It is not a weakly prime, because it can be changed into another prime (43890211) 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, 21945120 + 21945121.

It is an arithmetic number, because the mean of its divisors is an integer number (21945121).

Almost surely, 2^43890241 is an apocalyptic number.

It is an amenable number.

43890241 is a deficient number, since it is larger than the sum of its proper divisors (1).

43890241 is an equidigital number, since it uses as much as digits as its factorization.

43890241 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 31.

The square root of 43890241 is about 6624.9710188045. The cubic root of 43890241 is about 352.7410379652.

It can be divided in two parts, 4389024 and 1, that added together give a square (4389025 = 2095²).

The spelling of 43890241 in words is "forty-three million, eight hundred ninety thousand, two hundred forty-one".