11963889 has 24 divisors (see below), whose sum is σ = 20620320. Its totient is φ = 6835752.

The previous prime is 11963879. The next prime is 11963891. The reversal of 11963889 is 98836911.

11963889 is a `hidden beast` number, since 1 + 1 + 9 + 638 + 8 + 9 = 666.

It is not a de Polignac number, because 11963889 - 2⁴ = 11963873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11963879) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3199 + ... + 5844.

It is an arithmetic number, because the mean of its divisors is an integer number (859180).

Almost surely, 2^11963889 is an apocalyptic number.

It is an amenable number.

11963889 is a deficient number, since it is larger than the sum of its proper divisors (8656431).

11963889 is an equidigital number, since it uses as much as digits as its factorization.

11963889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9066 (or 9053 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 11963889 is about 3458.8855141505. The cubic root of 11963889 is about 228.7129690123.

The spelling of 11963889 in words is "eleven million, nine hundred sixty-three thousand, eight hundred eighty-nine".