40407915 has 16 divisors (see below), whose sum is σ = 64735776. Its totient is φ = 21523200.

The previous prime is 40407907. The next prime is 40407937. The reversal of 40407915 is 51970404.

It is a happy number.

40407915 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 40407915 - 2³ = 40407907 is a prime.

It is an unprimeable number.

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, 16575 + ... + 18855.

It is an arithmetic number, because the mean of its divisors is an integer number (4045986).

Almost surely, 2^40407915 is an apocalyptic number.

40407915 is a deficient number, since it is larger than the sum of its proper divisors (24327861).

40407915 is a wasteful number, since it uses less digits than its factorization.

40407915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3470.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 40407915 is about 6356.7220326203. The cubic root of 40407915 is about 343.1538011531.

The spelling of 40407915 in words is "forty million, four hundred seven thousand, nine hundred fifteen".