11888999 has 12 divisors (see below), whose sum is σ = 12707856. Its totient is φ = 11100672.

The previous prime is 11888983. The next prime is 11889011. The reversal of 11888999 is 99988811.

11888999 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11888999 - 2⁴ = 11888983 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 11888999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11888909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122519 + ... + 122615.

It is an arithmetic number, because the mean of its divisors is an integer number (1058988).

Almost surely, 2^11888999 is an apocalyptic number.

11888999 is a deficient number, since it is larger than the sum of its proper divisors (818857).

11888999 is an frugal number, since it uses more digits than its factorization.

11888999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 193 counting only the distinct ones).

The product of its digits is 373248, while the sum is 53.

The square root of 11888999 is about 3448.0427781569. The cubic root of 11888999 is about 228.2347471940.

The spelling of 11888999 in words is "eleven million, eight hundred eighty-eight thousand, nine hundred ninety-nine".