544989913 has 4 divisors (see below), whose sum is σ = 586912228. Its totient is φ = 503067600.

The previous prime is 544989911. The next prime is 544989947. The reversal of 544989913 is 319989445.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 218211984 + 326777929 = 14772^2 + 18077^2 .

It is a cyclic number.

It is not a de Polignac number, because 544989913 - 2¹ = 544989911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (544989911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20961138 + ... + 20961163.

It is an arithmetic number, because the mean of its divisors is an integer number (146728057).

Almost surely, 2^544989913 is an apocalyptic number.

It is an amenable number.

544989913 is a deficient number, since it is larger than the sum of its proper divisors (41922315).

544989913 is a wasteful number, since it uses less digits than its factorization.

544989913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41922314.

The product of its digits is 1399680, while the sum is 52.

The square root of 544989913 is about 23345.0190190542. The cubic root of 544989913 is about 816.8258776271.

The spelling of 544989913 in words is "five hundred forty-four million, nine hundred eighty-nine thousand, nine hundred thirteen".