19934099 has 4 divisors (see below), whose sum is σ = 19952160. Its totient is φ = 19916040.

The previous prime is 19934093. The next prime is 19934113. The reversal of 19934099 is 99043991.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19934099 - 2²⁰ = 18885523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19934093) 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 in 3 ways as a sum of consecutive naturals, for example, 7259 + ... + 9620.

It is an arithmetic number, because the mean of its divisors is an integer number (4988040).

Almost surely, 2^19934099 is an apocalyptic number.

19934099 is a deficient number, since it is larger than the sum of its proper divisors (18061).

19934099 is a wasteful number, since it uses less digits than its factorization.

19934099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18060.

The product of its (nonzero) digits is 78732, while the sum is 44.

The square root of 19934099 is about 4464.7619197444. The cubic root of 19934099 is about 271.1432955399.

The spelling of 19934099 in words is "nineteen million, nine hundred thirty-four thousand, ninety-nine".