1199710979 has 2 divisors, whose sum is σ = 1199710980. Its totient is φ = 1199710978.

The previous prime is 1199710933. The next prime is 1199710987. The reversal of 1199710979 is 9790179911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1199710979 - 2²⁰ = 1198662403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1199710979.

It is not a weakly prime, because it can be changed into another prime (1199712979) 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, 599855489 + 599855490.

It is an arithmetic number, because the mean of its divisors is an integer number (599855490).

Almost surely, 2^1199710979 is an apocalyptic number.

1199710979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1199710979 is an equidigital number, since it uses as much as digits as its factorization.

1199710979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 321489, while the sum is 53.

The square root of 1199710979 is about 34636.8442413566. The cubic root of 1199710979 is about 1062.5732482651.

The spelling of 1199710979 in words is "one billion, one hundred ninety-nine million, seven hundred ten thousand, nine hundred seventy-nine".