11959900 has 36 divisors (see below), whose sum is σ = 26126800. Its totient is φ = 4752000.

The previous prime is 11959897. The next prime is 11959901. The reversal of 11959900 is 995911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11959901) 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, 19600 + ... + 20200.

Almost surely, 2^11959900 is an apocalyptic number.

11959900 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 11959900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13063400).

11959900 is an abundant number, since it is smaller than the sum of its proper divisors (14166900).

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

11959900 is a wasteful number, since it uses less digits than its factorization.

11959900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814 (or 807 counting only the distinct ones).

The product of its (nonzero) digits is 3645, while the sum is 34.

The square root of 11959900 is about 3458.3088352546. The cubic root of 11959900 is about 228.6875470265.

The spelling of 11959900 in words is "eleven million, nine hundred fifty-nine thousand, nine hundred".