11985444 has 27 divisors (see below), whose sum is σ = 30349137. Its totient is φ = 3988224.

The previous prime is 11985427. The next prime is 11985451. The reversal of 11985444 is 44458911.

The square root of 11985444 is 3462.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 11902500 + 82944 = 3450^2 + 288^2 .

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 = 11985399 and 11985408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 20484 + ... + 21060.

Almost surely, 2^11985444 is an apocalyptic number.

11985444 is the 3462-nd square number.

It is an amenable number.

11985444 is an abundant number, since it is smaller than the sum of its proper divisors (18363693).

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

11985444 is an equidigital number, since it uses as much as digits as its factorization.

11985444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164 (or 582 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The cubic root of 11985444 is about 228.8502418315.

Multiplying 11985444 by its sum of digits (36), we get a square (431475984 = 20772²).

11985444 divided by its sum of digits (36) gives a square (332929 = 577²).

The spelling of 11985444 in words is "eleven million, nine hundred eighty-five thousand, four hundred forty-four".