11946246889 has 4 divisors (see below), whose sum is σ = 11946466900. Its totient is φ = 11946026880.

The previous prime is 11946246883. The next prime is 11946246937. The reversal of 11946246889 is 98864264911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98864264911 = 2339 ⋅42267749.

It can be written as a sum of positive squares in 2 ways, for example, as 462981289 + 11483265600 = 21517^2 + 107160^2 .

It is a cyclic number.

It is not a de Polignac number, because 11946246889 - 2⁵ = 11946246857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11946246883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36337 + ... + 158785.

It is an arithmetic number, because the mean of its divisors is an integer number (2986616725).

Almost surely, 2^11946246889 is an apocalyptic number.

It is an amenable number.

11946246889 is a deficient number, since it is larger than the sum of its proper divisors (220011).

11946246889 is an equidigital number, since it uses as much as digits as its factorization.

11946246889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220010.

The product of its digits is 5971968, while the sum is 58.

The spelling of 11946246889 in words is "eleven billion, nine hundred forty-six million, two hundred forty-six thousand, eight hundred eighty-nine".