19944484 has 12 divisors (see below), whose sum is σ = 39889024. Its totient is φ = 8547624.

The previous prime is 19944481. The next prime is 19944487. The reversal of 19944484 is 48444991.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (19944481) and next prime (19944487).

19944484 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 19944484.

It is not an unprimeable number, because it can be changed into a prime (19944481) 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, 356124 + ... + 356179.

Almost surely, 2^19944484 is an apocalyptic number.

19944484 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

19944484 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

19944484 is a wasteful number, since it uses less digits than its factorization.

19944484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712314 (or 712312 counting only the distinct ones).

The product of its digits is 165888, while the sum is 43.

The square root of 19944484 is about 4465.9247642566. The cubic root of 19944484 is about 271.1903729002.

The spelling of 19944484 in words is "nineteen million, nine hundred forty-four thousand, four hundred eighty-four".