544390644 has 48 divisors (see below), whose sum is σ = 1452929408. Its totient is φ = 155409408.

The previous prime is 544390631. The next prime is 544390663. The reversal of 544390644 is 446093445.

It is a super-2 number, since 2×544390644² = 592722346549469472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145404 + ... + 149100.

Almost surely, 2^544390644 is an apocalyptic number.

It is an amenable number.

544390644 is an abundant number, since it is smaller than the sum of its proper divisors (908538764).

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

544390644 is a wasteful number, since it uses less digits than its factorization.

544390644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5464 (or 5462 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 39.

The square root of 544390644 is about 23332.1804381845. The cubic root of 544390644 is about 816.5263748646.

The spelling of 544390644 in words is "five hundred forty-four million, three hundred ninety thousand, six hundred forty-four".