9953948891 has 2 divisors, whose sum is σ = 9953948892. Its totient is φ = 9953948890.

The previous prime is 9953948863. The next prime is 9953948899. The reversal of 9953948891 is 1988493599.

9953948891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (1988493599) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9953948891 - 2⁶ = 9953948827 is a prime.

It is not a weakly prime, because it can be changed into another prime (9953948899) by changing a digit.

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 as a sum of consecutive naturals, namely, 4976974445 + 4976974446.

It is an arithmetic number, because the mean of its divisors is an integer number (4976974446).

Almost surely, 2^9953948891 is an apocalyptic number.

9953948891 is a deficient number, since it is larger than the sum of its proper divisors (1).

9953948891 is an equidigital number, since it uses as much as digits as its factorization.

9953948891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25194240, while the sum is 65.

The square root of 9953948891 is about 99769.4787547775. The cubic root of 9953948891 is about 2151.1224635351.

The spelling of 9953948891 in words is "nine billion, nine hundred fifty-three million, nine hundred forty-eight thousand, eight hundred ninety-one".