7949965979 has 2 divisors, whose sum is σ = 7949965980. Its totient is φ = 7949965978.

The previous prime is 7949965973. The next prime is 7949966021. The reversal of 7949965979 is 9795699497.

It is a weak prime.

It is an emirp because it is prime and its reverse (9795699497) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7949965979 - 2¹² = 7949961883 is a prime.

It is not a weakly prime, because it can be changed into another prime (7949965973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3974982989 + 3974982990.

It is an arithmetic number, because the mean of its divisors is an integer number (3974982990).

Almost surely, 2^7949965979 is an apocalyptic number.

7949965979 is a deficient number, since it is larger than the sum of its proper divisors (1).

7949965979 is an equidigital number, since it uses as much as digits as its factorization.

7949965979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 347208120, while the sum is 74.

The square root of 7949965979 is about 89162.5817201364. The cubic root of 7949965979 is about 1995.8217755487.

The spelling of 7949965979 in words is "seven billion, nine hundred forty-nine million, nine hundred sixty-five thousand, nine hundred seventy-nine".