40407041 has 4 divisors (see below), whose sum is σ = 41169492. Its totient is φ = 39644592.

The previous prime is 40407007. The next prime is 40407049. The reversal of 40407041 is 14070404.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22800625 + 17606416 = 4775^2 + 4196^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40407041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40407049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 381146 + ... + 381251.

It is an arithmetic number, because the mean of its divisors is an integer number (10292373).

Almost surely, 2^40407041 is an apocalyptic number.

It is an amenable number.

40407041 is a deficient number, since it is larger than the sum of its proper divisors (762451).

40407041 is an equidigital number, since it uses as much as digits as its factorization.

40407041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762450.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 40407041 is about 6356.6532861247. The cubic root of 40407041 is about 343.1513270620.

Adding to 40407041 its reverse (14070404), we get a palindrome (54477445).

The spelling of 40407041 in words is "forty million, four hundred seven thousand, forty-one".