561944412 has 48 divisors (see below), whose sum is σ = 1468051200. Its totient is φ = 185880240.

The previous prime is 561944387. The next prime is 561944417. The reversal of 561944412 is 214449165.

561944412 is a `hidden beast` number, since 56 + 194 + 4 + 412 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561944417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5712 + ... + 34007.

It is an arithmetic number, because the mean of its divisors is an integer number (30584400).

Almost surely, 2^561944412 is an apocalyptic number.

It is an amenable number.

561944412 is an abundant number, since it is smaller than the sum of its proper divisors (906106788).

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

561944412 is a wasteful number, since it uses less digits than its factorization.

561944412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39863 (or 39855 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 561944412 is about 23705.3667341385. The cubic root of 561944412 is about 825.2099432640.

It can be divided in two parts, 56194 and 4412, that added together give a palindrome (60606).

The spelling of 561944412 in words is "five hundred sixty-one million, nine hundred forty-four thousand, four hundred twelve".