544533309 has 12 divisors (see below), whose sum is σ = 787101952. Its totient is φ = 362766600.

The previous prime is 544533287. The next prime is 544533313. The reversal of 544533309 is 903335445.

It is a happy number.

It is not a de Polignac number, because 544533309 - 2¹¹ = 544531261 is a prime.

It is a super-2 number, since 2×544533309² = 593033049220978962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (544533359) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7327 + ... + 33804.

Almost surely, 2^544533309 is an apocalyptic number.

It is an amenable number.

544533309 is a deficient number, since it is larger than the sum of its proper divisors (242568643).

544533309 is a wasteful number, since it uses less digits than its factorization.

544533309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42608 (or 42605 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 36.

The square root of 544533309 is about 23335.2374961130. The cubic root of 544533309 is about 816.5976959292.

The spelling of 544533309 in words is "five hundred forty-four million, five hundred thirty-three thousand, three hundred nine".