40120444 has 24 divisors (see below), whose sum is σ = 86414048. Its totient is φ = 15871680.

The previous prime is 40120397. The next prime is 40120463. The reversal of 40120444 is 44402104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54747 + ... + 55474.

Almost surely, 2^40120444 is an apocalyptic number.

It is an amenable number.

40120444 is an abundant number, since it is smaller than the sum of its proper divisors (46293604).

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

40120444 is a wasteful number, since it uses less digits than its factorization.

40120444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110245 (or 110243 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 40120444 is about 6334.0700974966. The cubic root of 40120444 is about 342.3381059514.

Adding to 40120444 its reverse (44402104), we get a palindrome (84522548).

The spelling of 40120444 in words is "forty million, one hundred twenty thousand, four hundred forty-four".