549717659 has 2 divisors, whose sum is σ = 549717660. Its totient is φ = 549717658.

The previous prime is 549717653. The next prime is 549717689. The reversal of 549717659 is 956717945.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-549717659 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 549717659.

It is not a weakly prime, because it can be changed into another prime (549717653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274858829 + 274858830.

It is an arithmetic number, because the mean of its divisors is an integer number (274858830).

Almost surely, 2^549717659 is an apocalyptic number.

549717659 is a deficient number, since it is larger than the sum of its proper divisors (1).

549717659 is an equidigital number, since it uses as much as digits as its factorization.

549717659 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2381400, while the sum is 53.

The square root of 549717659 is about 23446.0584960458. The cubic root of 549717659 is about 819.1810478237.

The spelling of 549717659 in words is "five hundred forty-nine million, seven hundred seventeen thousand, six hundred fifty-nine".