40544009 has 8 divisors (see below), whose sum is σ = 46153152. Its totient is φ = 35255440.

The previous prime is 40543999. The next prime is 40544011. The reversal of 40544009 is 90044504.

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

It is a de Polignac number, because none of the positive numbers 2^k-40544009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40544029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79874 + ... + 80379.

It is an arithmetic number, because the mean of its divisors is an integer number (5769144).

Almost surely, 2^40544009 is an apocalyptic number.

It is an amenable number.

40544009 is a deficient number, since it is larger than the sum of its proper divisors (5609143).

40544009 is a wasteful number, since it uses less digits than its factorization.

40544009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160287.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 40544009 is about 6367.4177654682. The cubic root of 40544009 is about 343.5386171921.

The spelling of 40544009 in words is "forty million, five hundred forty-four thousand, nine".