43666041 has 4 divisors (see below), whose sum is σ = 58221392. Its totient is φ = 29110692.

The previous prime is 43666039. The next prime is 43666043. The reversal of 43666041 is 14066634.

43666041 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 an interprime number because it is at equal distance from previous prime (43666039) and next prime (43666043).

It is not a de Polignac number, because 43666041 - 2¹ = 43666039 is a prime.

It is a super-2 number, since 2×43666041² = 3813446273227362, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (43666043) 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, 7277671 + ... + 7277676.

It is an arithmetic number, because the mean of its divisors is an integer number (14555348).

Almost surely, 2^43666041 is an apocalyptic number.

It is an amenable number.

43666041 is a deficient number, since it is larger than the sum of its proper divisors (14555351).

43666041 is a wasteful number, since it uses less digits than its factorization.

43666041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14555350.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 43666041 is about 6608.0285259675. The cubic root of 43666041 is about 352.1393887742.

The spelling of 43666041 in words is "forty-three million, six hundred sixty-six thousand, forty-one".