40331444 has 6 divisors (see below), whose sum is σ = 70580034. Its totient is φ = 20165720.

The previous prime is 40331441. The next prime is 40331449. The reversal of 40331444 is 44413304.

40331444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 35760400 + 4571044 = 5980^2 + 2138^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40331441) 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 as a sum of consecutive naturals, namely, 5041427 + ... + 5041434.

It is an arithmetic number, because the mean of its divisors is an integer number (11763339).

Almost surely, 2^40331444 is an apocalyptic number.

It is an amenable number.

40331444 is a deficient number, since it is larger than the sum of its proper divisors (30248590).

40331444 is a wasteful number, since it uses less digits than its factorization.

40331444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10082865 (or 10082863 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 40331444 is about 6350.7042129200. The cubic root of 40331444 is about 342.9371943700.

Adding to 40331444 its reverse (44413304), we get a palindrome (84744748).

The spelling of 40331444 in words is "forty million, three hundred thirty-one thousand, four hundred forty-four".