19799445 has 8 divisors (see below), whose sum is σ = 31679136. Its totient is φ = 10559696.

The previous prime is 19799419. The next prime is 19799449. The reversal of 19799445 is 54499791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19799445 - 2⁵ = 19799413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19799394 and 19799403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19799449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 659967 + ... + 659996.

It is an arithmetic number, because the mean of its divisors is an integer number (3959892).

Almost surely, 2^19799445 is an apocalyptic number.

19799445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19799445 is a deficient number, since it is larger than the sum of its proper divisors (11879691).

19799445 is a wasteful number, since it uses less digits than its factorization.

19799445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1319971.

The product of its digits is 408240, while the sum is 48.

The square root of 19799445 is about 4449.6567283331. The cubic root of 19799445 is about 270.5313951600.

The spelling of 19799445 in words is "nineteen million, seven hundred ninety-nine thousand, four hundred forty-five".