40404605 has 8 divisors (see below), whose sum is σ = 48662232. Its totient is φ = 32205888.

The previous prime is 40404593. The next prime is 40404613. The reversal of 40404605 is 50640404.

It is a happy number.

40404605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 436921 + 39967684 = 661^2 + 6322^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 40404605 - 2¹⁰ = 40403581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 13202 + ... + 15971.

It is an arithmetic number, because the mean of its divisors is an integer number (6082779).

Almost surely, 2^40404605 is an apocalyptic number.

It is an amenable number.

40404605 is a deficient number, since it is larger than the sum of its proper divisors (8257627).

40404605 is a wasteful number, since it uses less digits than its factorization.

40404605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29455.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 40404605 is about 6356.4616729750. The cubic root of 40404605 is about 343.1444311233.

The spelling of 40404605 in words is "forty million, four hundred four thousand, six hundred five".