19944873 has 60 divisors (see below), whose sum is σ = 34011648. Its totient is φ = 11625120.

The previous prime is 19944863. The next prime is 19944877. The reversal of 19944873 is 37844991.

It is not a de Polignac number, because 19944873 - 2⁴ = 19944857 is a prime.

It is a super-2 number, since 2×19944873² = 795595917972258, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (19944877) by changing a digit.

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 59 ways as a sum of consecutive naturals, for example, 424336 + ... + 424382.

Almost surely, 2^19944873 is an apocalyptic number.

19944873 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

19944873 is a deficient number, since it is larger than the sum of its proper divisors (14066775).

19944873 is a wasteful number, since it uses less digits than its factorization.

19944873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 94 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 19944873 is about 4465.9683160542. The cubic root of 19944873 is about 271.1921360003.

The spelling of 19944873 in words is "nineteen million, nine hundred forty-four thousand, eight hundred seventy-three".