43039091 has 4 divisors (see below), whose sum is σ = 43132512. Its totient is φ = 42945672.

The previous prime is 43039079. The next prime is 43039093. The reversal of 43039091 is 19093034.

43039091 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 is a cyclic number.

It is not a de Polignac number, because 43039091 - 2⁶ = 43039027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43039093) 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, 46016 + ... + 46941.

It is an arithmetic number, because the mean of its divisors is an integer number (10783128).

Almost surely, 2^43039091 is an apocalyptic number.

43039091 is a deficient number, since it is larger than the sum of its proper divisors (93421).

43039091 is an equidigital number, since it uses as much as digits as its factorization.

43039091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93420.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 43039091 is about 6560.4185079917. The cubic root of 43039091 is about 350.4459377085.

The spelling of 43039091 in words is "forty-three million, thirty-nine thousand, ninety-one".