40654009 has 16 divisors (see below), whose sum is σ = 46347840. Its totient is φ = 35328960.

The previous prime is 40654007. The next prime is 40654037. The reversal of 40654009 is 90045604.

40654009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 40654009 - 2¹ = 40654007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40654007) 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 15 ways as a sum of consecutive naturals, for example, 23167 + ... + 24859.

It is an arithmetic number, because the mean of its divisors is an integer number (2896740).

Almost surely, 2^40654009 is an apocalyptic number.

It is an amenable number.

40654009 is a deficient number, since it is larger than the sum of its proper divisors (5693831).

40654009 is a wasteful number, since it uses less digits than its factorization.

40654009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800.

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

The square root of 40654009 is about 6376.0496390790. The cubic root of 40654009 is about 343.8490216546.

The spelling of 40654009 in words is "forty million, six hundred fifty-four thousand, nine".