549987829 has 2 divisors, whose sum is σ = 549987830. Its totient is φ = 549987828.

The previous prime is 549987821. The next prime is 549987839. The reversal of 549987829 is 928789945.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 502790929 + 47196900 = 22423^2 + 6870^2 .

It is a cyclic number.

It is not a de Polignac number, because 549987829 - 2³ = 549987821 is a prime.

It is a super-2 number, since 2×549987829² = 604973224096266482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (549987821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274993914 + 274993915.

It is an arithmetic number, because the mean of its divisors is an integer number (274993915).

Almost surely, 2^549987829 is an apocalyptic number.

It is an amenable number.

549987829 is a deficient number, since it is larger than the sum of its proper divisors (1).

549987829 is an equidigital number, since it uses as much as digits as its factorization.

549987829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13063680, while the sum is 61.

The square root of 549987829 is about 23451.8193110897. The cubic root of 549987829 is about 819.3152269444.

The spelling of 549987829 in words is "five hundred forty-nine million, nine hundred eighty-seven thousand, eight hundred twenty-nine".