19904983 has 8 divisors (see below), whose sum is σ = 23060768. Its totient is φ = 16827264.

The previous prime is 19904981. The next prime is 19904987. The reversal of 19904983 is 38940991.

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 19904983 - 2¹ = 19904981 is a prime.

It is the 4462-nd Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19904981) by changing a digit.

It is a nontrivial repunit in base 4461.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18966 + ... + 19987.

It is an arithmetic number, because the mean of its divisors is an integer number (2882596).

Almost surely, 2^19904983 is an apocalyptic number.

19904983 is a deficient number, since it is larger than the sum of its proper divisors (3155785).

19904983 is an equidigital number, since it uses as much as digits as its factorization.

19904983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39033.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 19904983 is about 4461.5000840524. The cubic root of 19904983 is about 271.0112194263.

The spelling of 19904983 in words is "nineteen million, nine hundred four thousand, nine hundred eighty-three".