11990534839 has 4 divisors (see below), whose sum is σ = 12621615640. Its totient is φ = 11359454040.

The previous prime is 11990534813. The next prime is 11990534849. The reversal of 11990534839 is 93843509911.

It is a happy number.

11990534839 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11990534839 - 2⁵ = 11990534807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11990534849) 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 in 3 ways as a sum of consecutive naturals, for example, 315540372 + ... + 315540409.

It is an arithmetic number, because the mean of its divisors is an integer number (3155403910).

Almost surely, 2^11990534839 is an apocalyptic number.

11990534839 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

11990534839 is a deficient number, since it is larger than the sum of its proper divisors (631080801).

11990534839 is an equidigital number, since it uses as much as digits as its factorization.

11990534839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631080800.

The product of its (nonzero) digits is 1049760, while the sum is 52.

The spelling of 11990534839 in words is "eleven billion, nine hundred ninety million, five hundred thirty-four thousand, eight hundred thirty-nine".