9986578253 has 2 divisors, whose sum is σ = 9986578254. Its totient is φ = 9986578252.

The previous prime is 9986578247. The next prime is 9986578291. The reversal of 9986578253 is 3528756899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6102421924 + 3884156329 = 78118^2 + 62323^2 .

It is a cyclic number.

It is not a de Polignac number, because 9986578253 - 2¹⁶ = 9986512717 is a prime.

It is a super-3 number, since 3×9986578253³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9986578853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4993289126 + 4993289127.

It is an arithmetic number, because the mean of its divisors is an integer number (4993289127).

Almost surely, 2^9986578253 is an apocalyptic number.

It is an amenable number.

9986578253 is a deficient number, since it is larger than the sum of its proper divisors (1).

9986578253 is an equidigital number, since it uses as much as digits as its factorization.

9986578253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32659200, while the sum is 62.

The square root of 9986578253 is about 99932.8687319643. The cubic root of 9986578253 is about 2153.4703825688.

The spelling of 9986578253 in words is "nine billion, nine hundred eighty-six million, five hundred seventy-eight thousand, two hundred fifty-three".