550739489 has 4 divisors (see below), whose sum is σ = 550958100. Its totient is φ = 550520880.

The previous prime is 550739477. The next prime is 550739507. The reversal of 550739489 is 984937055.

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 359747089 + 190992400 = 18967^2 + 13820^2 .

It is a cyclic number.

It is not a de Polignac number, because 550739489 - 2⁴ = 550739473 is a prime.

It is a super-2 number, since 2×550739489² = 606627969487962242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550739419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105482 + ... + 110579.

It is an arithmetic number, because the mean of its divisors is an integer number (137739525).

Almost surely, 2^550739489 is an apocalyptic number.

It is an amenable number.

550739489 is a deficient number, since it is larger than the sum of its proper divisors (218611).

550739489 is a wasteful number, since it uses less digits than its factorization.

550739489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218610.

The product of its (nonzero) digits is 1360800, while the sum is 50.

The square root of 550739489 is about 23467.8394616974. The cubic root of 550739489 is about 819.6883055884.

The spelling of 550739489 in words is "five hundred fifty million, seven hundred thirty-nine thousand, four hundred eighty-nine".