9955619393 has 2 divisors, whose sum is σ = 9955619394. Its totient is φ = 9955619392.

The previous prime is 9955619371. The next prime is 9955619459. The reversal of 9955619393 is 3939165599.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6094612624 + 3861006769 = 78068^2 + 62137^2 .

It is a cyclic number.

It is not a de Polignac number, because 9955619393 - 2²⁰ = 9954570817 is a prime.

It is a super-2 number, since 2×9955619393² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9955619353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4977809696 + 4977809697.

It is an arithmetic number, because the mean of its divisors is an integer number (4977809697).

Almost surely, 2^9955619393 is an apocalyptic number.

It is an amenable number.

9955619393 is a deficient number, since it is larger than the sum of its proper divisors (1).

9955619393 is an equidigital number, since it uses as much as digits as its factorization.

9955619393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8857350, while the sum is 59.

The square root of 9955619393 is about 99777.8502123593. The cubic root of 9955619393 is about 2151.2427927771.

The spelling of 9955619393 in words is "nine billion, nine hundred fifty-five million, six hundred nineteen thousand, three hundred ninety-three".