9991419593 has 2 divisors, whose sum is σ = 9991419594. Its totient is φ = 9991419592.

The previous prime is 9991419547. The next prime is 9991419611. The reversal of 9991419593 is 3959141999.

9991419593 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 can be written as a sum of positive squares in only one way, i.e., 8483883664 + 1507535929 = 92108^2 + 38827^2 .

It is a cyclic number.

It is not a de Polignac number, because 9991419593 - 2²⁸ = 9722984137 is a prime.

It is not a weakly prime, because it can be changed into another prime (9991419293) 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, 4995709796 + 4995709797.

It is an arithmetic number, because the mean of its divisors is an integer number (4995709797).

Almost surely, 2^9991419593 is an apocalyptic number.

It is an amenable number.

9991419593 is a deficient number, since it is larger than the sum of its proper divisors (1).

9991419593 is an equidigital number, since it uses as much as digits as its factorization.

9991419593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3542940, while the sum is 59.

The square root of 9991419593 is about 99957.0887581266. The cubic root of 9991419593 is about 2153.8183161571.

The spelling of 9991419593 in words is "nine billion, nine hundred ninety-one million, four hundred nineteen thousand, five hundred ninety-three".