1200068979 has 4 divisors (see below), whose sum is σ = 1600091976. Its totient is φ = 800045984.

The previous prime is 1200068977. The next prime is 1200069007. The reversal of 1200068979 is 9798600021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1200068979 - 2¹ = 1200068977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1200068979.

It is not an unprimeable number, because it can be changed into a prime (1200068977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200011494 + ... + 200011499.

It is an arithmetic number, because the mean of its divisors is an integer number (400022994).

Almost surely, 2^1200068979 is an apocalyptic number.

1200068979 is a deficient number, since it is larger than the sum of its proper divisors (400022997).

1200068979 is an equidigital number, since it uses as much as digits as its factorization.

1200068979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400022996.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 1200068979 is about 34642.0117631756. The cubic root of 1200068979 is about 1062.6789302162.

The spelling of 1200068979 in words is "one billion, two hundred million, sixty-eight thousand, nine hundred seventy-nine".