11989700 has 36 divisors (see below), whose sum is σ = 26581632. Its totient is φ = 4692000.

The previous prime is 11989697. The next prime is 11989721. The reversal of 11989700 is 798911.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 3425 + ... + 5975.

Almost surely, 2^11989700 is an apocalyptic number.

11989700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11989700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13290816).

11989700 is an abundant number, since it is smaller than the sum of its proper divisors (14591932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11989700 is a wasteful number, since it uses less digits than its factorization.

11989700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2612 (or 2605 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 35.

The square root of 11989700 is about 3462.6146190415. The cubic root of 11989700 is about 228.8773266678.

The spelling of 11989700 in words is "eleven million, nine hundred eighty-nine thousand, seven hundred".