9955871369 has 2 divisors, whose sum is σ = 9955871370. Its totient is φ = 9955871368.

The previous prime is 9955871339. The next prime is 9955871377. The reversal of 9955871369 is 9631785599.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9406672144 + 549199225 = 96988^2 + 23435^2 .

It is an emirp because it is prime and its reverse (9631785599) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9955871369 - 2⁸ = 9955871113 is a prime.

It is a super-2 number, since 2×9955871369² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9955871329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4977935684 + 4977935685.

It is an arithmetic number, because the mean of its divisors is an integer number (4977935685).

Almost surely, 2^9955871369 is an apocalyptic number.

It is an amenable number.

9955871369 is a deficient number, since it is larger than the sum of its proper divisors (1).

9955871369 is an equidigital number, since it uses as much as digits as its factorization.

9955871369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18370800, while the sum is 62.

The square root of 9955871369 is about 99779.1128894219. The cubic root of 9955871369 is about 2151.2609418900.

The spelling of 9955871369 in words is "nine billion, nine hundred fifty-five million, eight hundred seventy-one thousand, three hundred sixty-nine".