40247109 has 24 divisors (see below), whose sum is σ = 70349760. Its totient is φ = 21644928.

The previous prime is 40247093. The next prime is 40247113. The reversal of 40247109 is 90174204.

It is a happy number.

40247109 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 40247109 - 2⁴ = 40247093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40247159) 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 23 ways as a sum of consecutive naturals, for example, 17719 + ... + 19860.

It is an arithmetic number, because the mean of its divisors is an integer number (2931240).

Almost surely, 2^40247109 is an apocalyptic number.

It is an amenable number.

40247109 is a deficient number, since it is larger than the sum of its proper divisors (30102651).

40247109 is a wasteful number, since it uses less digits than its factorization.

40247109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37609 (or 37606 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 40247109 is about 6344.0609234149. The cubic root of 40247109 is about 342.6979948134.

The spelling of 40247109 in words is "forty million, two hundred forty-seven thousand, one hundred nine".