19899683 has 4 divisors (see below), whose sum is σ = 20009808. Its totient is φ = 19789560.

The previous prime is 19899679. The next prime is 19899689. The reversal of 19899683 is 38699891.

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 19899683 - 2² = 19899679 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19899689) 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 3 ways as a sum of consecutive naturals, for example, 54791 + ... + 55152.

It is an arithmetic number, because the mean of its divisors is an integer number (5002452).

Almost surely, 2^19899683 is an apocalyptic number.

19899683 is a deficient number, since it is larger than the sum of its proper divisors (110125).

19899683 is a wasteful number, since it uses less digits than its factorization.

19899683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110124.

The product of its digits is 839808, while the sum is 53.

The square root of 19899683 is about 4460.9060738823. The cubic root of 19899683 is about 270.9871636917.

The spelling of 19899683 in words is "nineteen million, eight hundred ninety-nine thousand, six hundred eighty-three".