1298944979 has 2 divisors, whose sum is σ = 1298944980. Its totient is φ = 1298944978.

The previous prime is 1298944963. The next prime is 1298945017. The reversal of 1298944979 is 9794498921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1298944979 - 2⁴ = 1298944963 is a prime.

It is not a weakly prime, because it can be changed into another prime (1298944949) 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 as a sum of consecutive naturals, namely, 649472489 + 649472490.

It is an arithmetic number, because the mean of its divisors is an integer number (649472490).

Almost surely, 2^1298944979 is an apocalyptic number.

1298944979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1298944979 is an equidigital number, since it uses as much as digits as its factorization.

1298944979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11757312, while the sum is 62.

The square root of 1298944979 is about 36040.8792761775. The cubic root of 1298944979 is about 1091.0975615130.

The spelling of 1298944979 in words is "one billion, two hundred ninety-eight million, nine hundred forty-four thousand, nine hundred seventy-nine".