19984253 has 2 divisors, whose sum is σ = 19984254. Its totient is φ = 19984252.

The previous prime is 19984241. The next prime is 19984267. The reversal of 19984253 is 35248991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16949689 + 3034564 = 4117^2 + 1742^2 .

It is an emirp because it is prime and its reverse (35248991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19984253 - 2⁶ = 19984189 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 19984253.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19984213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9992126 + 9992127.

It is an arithmetic number, because the mean of its divisors is an integer number (9992127).

Almost surely, 2^19984253 is an apocalyptic number.

It is an amenable number.

19984253 is a deficient number, since it is larger than the sum of its proper divisors (1).

19984253 is an equidigital number, since it uses as much as digits as its factorization.

19984253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 41.

The square root of 19984253 is about 4470.3750401952. The cubic root of 19984253 is about 271.3705030641.

The spelling of 19984253 in words is "nineteen million, nine hundred eighty-four thousand, two hundred fifty-three".