11910939847 has 2 divisors, whose sum is σ = 11910939848. Its totient is φ = 11910939846.

The previous prime is 11910939779. The next prime is 11910939871. The reversal of 11910939847 is 74893901911.

11910939847 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 a cyclic number.

It is not a de Polignac number, because 11910939847 - 2²³ = 11902551239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11910939794 and 11910939803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11911939847) 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, 5955469923 + 5955469924.

It is an arithmetic number, because the mean of its divisors is an integer number (5955469924).

Almost surely, 2^11910939847 is an apocalyptic number.

11910939847 is a deficient number, since it is larger than the sum of its proper divisors (1).

11910939847 is an equidigital number, since it uses as much as digits as its factorization.

11910939847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 489888, while the sum is 52.

The spelling of 11910939847 in words is "eleven billion, nine hundred ten million, nine hundred thirty-nine thousand, eight hundred forty-seven".