549989249 has 2 divisors, whose sum is σ = 549989250. Its totient is φ = 549989248.

The previous prime is 549989243. The next prime is 549989267. The reversal of 549989249 is 942989945.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 538564849 + 11424400 = 23207^2 + 3380^2 .

It is a cyclic number.

It is not a de Polignac number, because 549989249 - 2²⁰ = 548940673 is a prime.

It is not a weakly prime, because it can be changed into another prime (549989243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274994624 + 274994625.

It is an arithmetic number, because the mean of its divisors is an integer number (274994625).

Almost surely, 2^549989249 is an apocalyptic number.

It is an amenable number.

549989249 is a deficient number, since it is larger than the sum of its proper divisors (1).

549989249 is an equidigital number, since it uses as much as digits as its factorization.

549989249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8398080, while the sum is 59.

The square root of 549989249 is about 23451.8495859069. The cubic root of 549989249 is about 819.3159320671.

The spelling of 549989249 in words is "five hundred forty-nine million, nine hundred eighty-nine thousand, two hundred forty-nine".