19444044 has 12 divisors (see below), whose sum is σ = 45369464. Its totient is φ = 6481344.

The previous prime is 19444043. The next prime is 19444063. The reversal of 19444044 is 44044491.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (19444043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 810157 + ... + 810180.

Almost surely, 2^19444044 is an apocalyptic number.

It is an amenable number.

19444044 is an abundant number, since it is smaller than the sum of its proper divisors (25925420).

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

19444044 is a wasteful number, since it uses less digits than its factorization.

19444044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1620344 (or 1620342 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 19444044 is about 4409.5401120752. The cubic root of 19444044 is about 268.9029283575.

The spelling of 19444044 in words is "nineteen million, four hundred forty-four thousand, forty-four".