19939112 has 8 divisors (see below), whose sum is σ = 37385850. Its totient is φ = 9969552.

The previous prime is 19939111. The next prime is 19939121. The reversal of 19939112 is 21193991.

It can be written as a sum of positive squares in only one way, i.e., 13147876 + 6791236 = 3626^2 + 2606^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (19939111) 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 as a sum of consecutive naturals, namely, 1246187 + ... + 1246202.

Almost surely, 2^19939112 is an apocalyptic number.

It is an amenable number.

19939112 is a deficient number, since it is larger than the sum of its proper divisors (17446738).

19939112 is a wasteful number, since it uses less digits than its factorization.

19939112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2492395 (or 2492391 counting only the distinct ones).

The product of its digits is 4374, while the sum is 35.

The square root of 19939112 is about 4465.3232805700. The cubic root of 19939112 is about 271.1660225501.

The spelling of 19939112 in words is "nineteen million, nine hundred thirty-nine thousand, one hundred twelve".