550009979 has 2 divisors, whose sum is σ = 550009980. Its totient is φ = 550009978.

The previous prime is 550009973. The next prime is 550009981. The reversal of 550009979 is 979900055.

550009979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 550009979 - 2⁴ = 550009963 is a prime.

Together with 550009981, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (550009973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275004989 + 275004990.

It is an arithmetic number, because the mean of its divisors is an integer number (275004990).

Almost surely, 2^550009979 is an apocalyptic number.

550009979 is a deficient number, since it is larger than the sum of its proper divisors (1).

550009979 is an equidigital number, since it uses as much as digits as its factorization.

550009979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127575, while the sum is 44.

The square root of 550009979 is about 23452.2915511470. The cubic root of 550009979 is about 819.3262257264.

The spelling of 550009979 in words is "five hundred fifty million, nine thousand, nine hundred seventy-nine".