19979344 has 40 divisors (see below), whose sum is σ = 48264768. Its totient is φ = 7783680.

The previous prime is 19979339. The next prime is 19979359. The reversal of 19979344 is 44397991.

It is a junction number, because it is equal to n+sod(n) for n = 19979294 and 19979303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6877 + ... + 9340.

Almost surely, 2^19979344 is an apocalyptic number.

19979344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

19979344 is an abundant number, since it is smaller than the sum of its proper divisors (28285424).

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

19979344 is a wasteful number, since it uses less digits than its factorization.

19979344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16243 (or 16237 counting only the distinct ones).

The product of its digits is 244944, while the sum is 46.

The square root of 19979344 is about 4469.8259473944. The cubic root of 19979344 is about 271.3482811194.

The spelling of 19979344 in words is "nineteen million, nine hundred seventy-nine thousand, three hundred forty-four".