40436009 has 8 divisors (see below), whose sum is σ = 42788640. Its totient is φ = 38105856.

The previous prime is 40436003. The next prime is 40436017. The reversal of 40436009 is 90063404.

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 40436009 - 2⁸ = 40435753 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40436003) 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, 1847 + ... + 9180.

It is an arithmetic number, because the mean of its divisors is an integer number (5348580).

Almost surely, 2^40436009 is an apocalyptic number.

It is an amenable number.

40436009 is a deficient number, since it is larger than the sum of its proper divisors (2352631).

40436009 is a wasteful number, since it uses less digits than its factorization.

40436009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11239.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 40436009 is about 6358.9314353907. The cubic root of 40436009 is about 343.2333097471.

The spelling of 40436009 in words is "forty million, four hundred thirty-six thousand, nine".