9956791433 has 2 divisors, whose sum is σ = 9956791434. Its totient is φ = 9956791432.

The previous prime is 9956791399. The next prime is 9956791511. The reversal of 9956791433 is 3341976599.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5099816569 + 4856974864 = 71413^2 + 69692^2 .

It is a cyclic number.

It is not a de Polignac number, because 9956791433 - 2⁸ = 9956791177 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (9956721433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4978395716 + 4978395717.

It is an arithmetic number, because the mean of its divisors is an integer number (4978395717).

Almost surely, 2^9956791433 is an apocalyptic number.

It is an amenable number.

9956791433 is a deficient number, since it is larger than the sum of its proper divisors (1).

9956791433 is an equidigital number, since it uses as much as digits as its factorization.

9956791433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5511240, while the sum is 56.

The square root of 9956791433 is about 99783.7232869169. The cubic root of 9956791433 is about 2151.3272088765.

The spelling of 9956791433 in words is "nine billion, nine hundred fifty-six million, seven hundred ninety-one thousand, four hundred thirty-three".