40031946 has 24 divisors (see below), whose sum is σ = 86935680. Its totient is φ = 13313256.

The previous prime is 40031941. The next prime is 40031969. The reversal of 40031946 is 64913004.

40031946 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 (40031941) 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 11 ways as a sum of consecutive naturals, for example, 6301 + ... + 10943.

It is an arithmetic number, because the mean of its divisors is an integer number (3622320).

Almost surely, 2^40031946 is an apocalyptic number.

40031946 is an abundant number, since it is smaller than the sum of its proper divisors (46903734).

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

40031946 is a wasteful number, since it uses less digits than its factorization.

40031946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5130 (or 5127 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 40031946 is about 6327.0803693331. The cubic root of 40031946 is about 342.0862099278.

The spelling of 40031946 in words is "forty million, thirty-one thousand, nine hundred forty-six".