549656929 has 2 divisors, whose sum is σ = 549656930. Its totient is φ = 549656928.

The previous prime is 549656897. The next prime is 549657071. The reversal of 549656929 is 929656945.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 339406929 + 210250000 = 18423^2 + 14500^2 .

It is a cyclic number.

It is not a de Polignac number, because 549656929 - 2⁵ = 549656897 is a prime.

It is a super-2 number, since 2×549656929² = 604245479195422082, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 549656929.

It is not a weakly prime, because it can be changed into another prime (549656329) 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, 274828464 + 274828465.

It is an arithmetic number, because the mean of its divisors is an integer number (274828465).

Almost surely, 2^549656929 is an apocalyptic number.

It is an amenable number.

549656929 is a deficient number, since it is larger than the sum of its proper divisors (1).

549656929 is an equidigital number, since it uses as much as digits as its factorization.

549656929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5248800, while the sum is 55.

The square root of 549656929 is about 23444.7633598635. The cubic root of 549656929 is about 819.1508803996.

The spelling of 549656929 in words is "five hundred forty-nine million, six hundred fifty-six thousand, nine hundred twenty-nine".