549608149 has 2 divisors, whose sum is σ = 549608150. Its totient is φ = 549608148.

The previous prime is 549608123. The next prime is 549608159. The reversal of 549608149 is 941806945.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 548028100 + 1580049 = 23410^2 + 1257^2 .

It is a cyclic number.

It is not a de Polignac number, because 549608149 - 2¹⁹ = 549083861 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 549608099 and 549608108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (549608119) 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 as a sum of consecutive naturals, namely, 274804074 + 274804075.

It is an arithmetic number, because the mean of its divisors is an integer number (274804075).

Almost surely, 2^549608149 is an apocalyptic number.

It is an amenable number.

549608149 is a deficient number, since it is larger than the sum of its proper divisors (1).

549608149 is an equidigital number, since it uses as much as digits as its factorization.

549608149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 549608149 is about 23443.7230191794. The cubic root of 549608149 is about 819.1266474888.

The spelling of 549608149 in words is "five hundred forty-nine million, six hundred eight thousand, one hundred forty-nine".