11889663 has 4 divisors (see below), whose sum is σ = 15852888. Its totient is φ = 7926440.

The previous prime is 11889659. The next prime is 11889701. The reversal of 11889663 is 36698811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36698811 = 3 ⋅12232937.

It is a cyclic number.

It is not a de Polignac number, because 11889663 - 2² = 11889659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11889463) 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, 1981608 + ... + 1981613.

It is an arithmetic number, because the mean of its divisors is an integer number (3963222).

Almost surely, 2^11889663 is an apocalyptic number.

11889663 is a deficient number, since it is larger than the sum of its proper divisors (3963225).

11889663 is an equidigital number, since it uses as much as digits as its factorization.

11889663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3963224.

The product of its digits is 62208, while the sum is 42.

The square root of 11889663 is about 3448.1390633210. The cubic root of 11889663 is about 228.2389960813.

The spelling of 11889663 in words is "eleven million, eight hundred eighty-nine thousand, six hundred sixty-three".