43936081 has 4 divisors (see below), whose sum is σ = 50212672. Its totient is φ = 37659492.

The previous prime is 43935977. The next prime is 43936091. The reversal of 43936081 is 18063934.

43936081 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 a de Polignac number, because none of the positive numbers 2^k-43936081 is a prime.

It is a super-2 number, since 2×43936081² = 3860758427277122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43936091) 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, 3138285 + ... + 3138298.

It is an arithmetic number, because the mean of its divisors is an integer number (12553168).

Almost surely, 2^43936081 is an apocalyptic number.

It is an amenable number.

43936081 is a deficient number, since it is larger than the sum of its proper divisors (6276591).

43936081 is an equidigital number, since it uses as much as digits as its factorization.

43936081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6276590.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 43936081 is about 6628.4297537200. The cubic root of 43936081 is about 352.8637989158.

The spelling of 43936081 in words is "forty-three million, nine hundred thirty-six thousand, eighty-one".