11989318 has 16 divisors (see below), whose sum is σ = 20773584. Its totient is φ = 5128960.

The previous prime is 11989283. The next prime is 11989319. The reversal of 11989318 is 81398911.

It is a happy number.

It is a super-2 number, since 2×11989318² = 287487492210248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11989319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15655 + ... + 16402.

It is an arithmetic number, because the mean of its divisors is an integer number (1298349).

Almost surely, 2^11989318 is an apocalyptic number.

11989318 is a deficient number, since it is larger than the sum of its proper divisors (8784266).

11989318 is a wasteful number, since it uses less digits than its factorization.

11989318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32087.

The product of its digits is 15552, while the sum is 40.

The square root of 11989318 is about 3462.5594579732. The cubic root of 11989318 is about 228.8748959129.

It can be divided in two parts, 119893 and 18, that added together give a palindrome (119911).

The spelling of 11989318 in words is "eleven million, nine hundred eighty-nine thousand, three hundred eighteen".