19979104 has 12 divisors (see below), whose sum is σ = 39333924. Its totient is φ = 9989536.

The previous prime is 19979101. The next prime is 19979117. The reversal of 19979104 is 40197991.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19979101) 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, 312142 + ... + 312205.

It is an arithmetic number, because the mean of its divisors is an integer number (3277827).

Almost surely, 2^19979104 is an apocalyptic number.

It is an amenable number.

19979104 is a deficient number, since it is larger than the sum of its proper divisors (19354820).

19979104 is an equidigital number, since it uses as much as digits as its factorization.

19979104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624357 (or 624349 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 40.

The square root of 19979104 is about 4469.7991006308. The cubic root of 19979104 is about 271.3471945998.

The spelling of 19979104 in words is "nineteen million, nine hundred seventy-nine thousand, one hundred four".