40307946 has 32 divisors (see below), whose sum is σ = 93648768. Its totient is φ = 11327040.

The previous prime is 40307909. The next prime is 40307947. The reversal of 40307946 is 64970304.

40307946 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (40307947) 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 15 ways as a sum of consecutive naturals, for example, 5305 + ... + 10428.

It is an arithmetic number, because the mean of its divisors is an integer number (2926524).

Almost surely, 2^40307946 is an apocalyptic number.

40307946 is an abundant number, since it is smaller than the sum of its proper divisors (53340822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40307946 is a wasteful number, since it uses less digits than its factorization.

40307946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15806.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 40307946 is about 6348.8539123215. The cubic root of 40307946 is about 342.8705804753.

The spelling of 40307946 in words is "forty million, three hundred seven thousand, nine hundred forty-six".