11990844 has 36 divisors (see below), whose sum is σ = 30683016. Its totient is φ = 3947808.

The previous prime is 11990837. The next prime is 11990861. The reversal of 11990844 is 44809911.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 11990799 and 11990808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 982 + ... + 4994.

It is an arithmetic number, because the mean of its divisors is an integer number (852306).

Almost surely, 2^11990844 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11990844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15341508).

11990844 is an abundant number, since it is smaller than the sum of its proper divisors (18692172).

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

11990844 is a wasteful number, since it uses less digits than its factorization.

11990844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4106 (or 4101 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 11990844 is about 3462.7798081888. The cubic root of 11990844 is about 228.8846058973.

The spelling of 11990844 in words is "eleven million, nine hundred ninety thousand, eight hundred forty-four".