40904605 has 16 divisors (see below), whose sum is σ = 57158784. Its totient is φ = 27518400.

The previous prime is 40904599. The next prime is 40904621. The reversal of 40904605 is 50640904.

40904605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40904605 - 2³ = 40904597 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 15 ways as a sum of consecutive naturals, for example, 9171 + ... + 12880.

It is an arithmetic number, because the mean of its divisors is an integer number (3572424).

Almost surely, 2^40904605 is an apocalyptic number.

It is an amenable number.

40904605 is a deficient number, since it is larger than the sum of its proper divisors (16254179).

40904605 is a wasteful number, since it uses less digits than its factorization.

40904605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22116.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 40904605 is about 6395.6708014093. The cubic root of 40904605 is about 344.5540832808.

The spelling of 40904605 in words is "forty million, nine hundred four thousand, six hundred five".