40335409 has 4 divisors (see below), whose sum is σ = 41019120. Its totient is φ = 39651700.

The previous prime is 40335401. The next prime is 40335467. The reversal of 40335409 is 90453304.

40335409 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 not a de Polignac number, because 40335409 - 2³ = 40335401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40335401) 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, 341767 + ... + 341884.

It is an arithmetic number, because the mean of its divisors is an integer number (10254780).

Almost surely, 2^40335409 is an apocalyptic number.

It is an amenable number.

40335409 is a deficient number, since it is larger than the sum of its proper divisors (683711).

40335409 is an equidigital number, since it uses as much as digits as its factorization.

40335409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683710.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 40335409 is about 6351.0163753528. The cubic root of 40335409 is about 342.9484320982.

The spelling of 40335409 in words is "forty million, three hundred thirty-five thousand, four hundred nine".