555999979 has 2 divisors, whose sum is σ = 555999980. Its totient is φ = 555999978.

The previous prime is 555999967. The next prime is 556000001. The reversal of 555999979 is 979999555.

555999979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 555999979 - 2²¹ = 553902827 is a prime.

It is not a weakly prime, because it can be changed into another prime (555999929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277999989 + 277999990.

It is an arithmetic number, because the mean of its divisors is an integer number (277999990).

Almost surely, 2^555999979 is an apocalyptic number.

555999979 is a deficient number, since it is larger than the sum of its proper divisors (1).

555999979 is an equidigital number, since it uses as much as digits as its factorization.

555999979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51667875, while the sum is 67.

The square root of 555999979 is about 23579.6517998040. The cubic root of 555999979 is about 822.2898415096.

The spelling of 555999979 in words is "five hundred fifty-five million, nine hundred ninety-nine thousand, nine hundred seventy-nine".