40418409 has 8 divisors (see below), whose sum is σ = 55144672. Its totient is φ = 26318880.

The previous prime is 40418407. The next prime is 40418419. The reversal of 40418409 is 90481404.

40418409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40418409 - 2¹ = 40418407 is a prime.

It is a super-3 number, since 3×40418409³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40418407) 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 7 ways as a sum of consecutive naturals, for example, 156532 + ... + 156789.

It is an arithmetic number, because the mean of its divisors is an integer number (6893084).

Almost surely, 2^40418409 is an apocalyptic number.

It is an amenable number.

40418409 is a deficient number, since it is larger than the sum of its proper divisors (14726263).

40418409 is a wasteful number, since it uses less digits than its factorization.

40418409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313367.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 40418409 is about 6357.5474044635. The cubic root of 40418409 is about 343.1835044451.

The spelling of 40418409 in words is "forty million, four hundred eighteen thousand, four hundred nine".