544249644 has 96 divisors (see below), whose sum is σ = 1360128000. Its totient is φ = 169019136.

The previous prime is 544249591. The next prime is 544249663. The reversal of 544249644 is 446942445.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 544249596 and 544249605.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2376522 + ... + 2376750.

It is an arithmetic number, because the mean of its divisors is an integer number (14168000).

Almost surely, 2^544249644 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 544249644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (680064000).

544249644 is an abundant number, since it is smaller than the sum of its proper divisors (815878356).

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

544249644 is a wasteful number, since it uses less digits than its factorization.

544249644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447 (or 445 counting only the distinct ones).

The product of its digits is 552960, while the sum is 42.

The square root of 544249644 is about 23329.1586646411. The cubic root of 544249644 is about 816.4558739224.

The spelling of 544249644 in words is "five hundred forty-four million, two hundred forty-nine thousand, six hundred forty-four".