8140444 has 24 divisors (see below), whose sum is σ = 15759968. Its totient is φ = 3654720.

The previous prime is 8140441. The next prime is 8140519. The reversal of 8140444 is 4440418.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8140441) 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 7 ways as a sum of consecutive naturals, for example, 192 + ... + 4039.

Almost surely, 2^8140444 is an apocalyptic number.

It is an amenable number.

8140444 is a deficient number, since it is larger than the sum of its proper divisors (7619524).

8140444 is a wasteful number, since it uses less digits than its factorization.

8140444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4285 (or 4283 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

The square root of 8140444 is about 2853.1463334361. The cubic root of 8140444 is about 201.1635839008.

The spelling of 8140444 in words is "eight million, one hundred forty thousand, four hundred forty-four".