40909043 has 4 divisors (see below), whose sum is σ = 46753200. Its totient is φ = 35064888.

The previous prime is 40909031. The next prime is 40909067. The reversal of 40909043 is 34090904.

It is a happy number.

40909043 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 40909043 - 2¹⁸ = 40646899 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40908997 and 40909015.

It is not an unprimeable number, because it can be changed into a prime (40909543) 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, 2922068 + ... + 2922081.

It is an arithmetic number, because the mean of its divisors is an integer number (11688300).

Almost surely, 2^40909043 is an apocalyptic number.

40909043 is a deficient number, since it is larger than the sum of its proper divisors (5844157).

40909043 is an equidigital number, since it uses as much as digits as its factorization.

40909043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5844156.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 40909043 is about 6396.0177454413. The cubic root of 40909043 is about 344.5665437827.

Adding to 40909043 its reverse (34090904), we get a palindrome (74999947).

The spelling of 40909043 in words is "forty million, nine hundred nine thousand, forty-three".