550189949 has 2 divisors, whose sum is σ = 550189950. Its totient is φ = 550189948.

The previous prime is 550189919. The next prime is 550189999. The reversal of 550189949 is 949981055.

It is an a-pointer prime, because the next prime (550189999) can be obtained adding 550189949 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 378108025 + 172081924 = 19445^2 + 13118^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550189949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 550189897 and 550189906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550189919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275094974 + 275094975.

It is an arithmetic number, because the mean of its divisors is an integer number (275094975).

Almost surely, 2^550189949 is an apocalyptic number.

It is an amenable number.

550189949 is a deficient number, since it is larger than the sum of its proper divisors (1).

550189949 is an equidigital number, since it uses as much as digits as its factorization.

550189949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 583200, while the sum is 50.

The square root of 550189949 is about 23456.1281758094. The cubic root of 550189949 is about 819.4155805057.

The spelling of 550189949 in words is "five hundred fifty million, one hundred eighty-nine thousand, nine hundred forty-nine".