40086009 has 12 divisors (see below), whose sum is σ = 60046896. Its totient is φ = 26723844.

The previous prime is 40086001. The next prime is 40086031. The reversal of 40086009 is 90068004.

It is not a de Polignac number, because 40086009 - 2³ = 40086001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (40086001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82239 + ... + 82724.

It is an arithmetic number, because the mean of its divisors is an integer number (5003908).

Almost surely, 2^40086009 is an apocalyptic number.

It is an amenable number.

40086009 is a deficient number, since it is larger than the sum of its proper divisors (19960887).

40086009 is an equidigital number, since it uses as much as digits as its factorization.

40086009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164978 (or 164966 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 40086009 is about 6331.3512775710. The cubic root of 40086009 is about 342.2401360576.

The spelling of 40086009 in words is "forty million, eighty-six thousand, nine".