19439104 has 20 divisors (see below), whose sum is σ = 38841264. Its totient is φ = 9719296.

The previous prime is 19439099. The next prime is 19439111. The reversal of 19439104 is 40193491.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18472 + ... + 19495.

Almost surely, 2^19439104 is an apocalyptic number.

It is an amenable number.

19439104 is a deficient number, since it is larger than the sum of its proper divisors (19402160).

19439104 is an frugal number, since it uses more digits than its factorization.

19439104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37985 (or 37969 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 19439104 is about 4408.9799273755. The cubic root of 19439104 is about 268.8801537231.

The spelling of 19439104 in words is "nineteen million, four hundred thirty-nine thousand, one hundred four".