549719689 has 2 divisors, whose sum is σ = 549719690. Its totient is φ = 549719688.

The previous prime is 549719593. The next prime is 549719713. The reversal of 549719689 is 986917945.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 384160000 + 165559689 = 19600^2 + 12867^2 .

It is a cyclic number.

It is not a de Polignac number, because 549719689 - 2¹³ = 549711497 is a prime.

It is not a weakly prime, because it can be changed into another prime (549711689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274859844 + 274859845.

It is an arithmetic number, because the mean of its divisors is an integer number (274859845).

Almost surely, 2^549719689 is an apocalyptic number.

It is an amenable number.

549719689 is a deficient number, since it is larger than the sum of its proper divisors (1).

549719689 is an equidigital number, since it uses as much as digits as its factorization.

549719689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4898880, while the sum is 58.

The square root of 549719689 is about 23446.1017868643. The cubic root of 549719689 is about 819.1820561810.

The spelling of 549719689 in words is "five hundred forty-nine million, seven hundred nineteen thousand, six hundred eighty-nine".