19439704 has 16 divisors (see below), whose sum is σ = 38593800. Its totient is φ = 9148032.

The previous prime is 19439701. The next prime is 19439723. The reversal of 19439704 is 40793491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19439701) 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, 71334 + ... + 71605.

Almost surely, 2^19439704 is an apocalyptic number.

It is an amenable number.

19439704 is a deficient number, since it is larger than the sum of its proper divisors (19154096).

19439704 is a wasteful number, since it uses less digits than its factorization.

19439704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142962 (or 142958 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 19439704 is about 4409.0479698003. The cubic root of 19439704 is about 268.8829200789.

The spelling of 19439704 in words is "nineteen million, four hundred thirty-nine thousand, seven hundred four".