549912859 has 2 divisors, whose sum is σ = 549912860. Its totient is φ = 549912858.

The previous prime is 549912841. The next prime is 549912919. The reversal of 549912859 is 958219945.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 549912859 - 2⁹ = 549912347 is a prime.

It is not a weakly prime, because it can be changed into another prime (549910859) 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, 274956429 + 274956430.

It is an arithmetic number, because the mean of its divisors is an integer number (274956430).

Almost surely, 2^549912859 is an apocalyptic number.

549912859 is a deficient number, since it is larger than the sum of its proper divisors (1).

549912859 is an equidigital number, since it uses as much as digits as its factorization.

549912859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1166400, while the sum is 52.

The square root of 549912859 is about 23450.2208731602. The cubic root of 549912859 is about 819.2779977244.

The spelling of 549912859 in words is "five hundred forty-nine million, nine hundred twelve thousand, eight hundred fifty-nine".