2987791979 has 2 divisors, whose sum is σ = 2987791980. Its totient is φ = 2987791978.

The previous prime is 2987791943. The next prime is 2987792051. The reversal of 2987791979 is 9791977892.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2987791979 is a prime.

It is not a weakly prime, because it can be changed into another prime (2987791579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1493895989 + 1493895990.

It is an arithmetic number, because the mean of its divisors is an integer number (1493895990).

Almost surely, 2^2987791979 is an apocalyptic number.

2987791979 is a deficient number, since it is larger than the sum of its proper divisors (1).

2987791979 is an equidigital number, since it uses as much as digits as its factorization.

2987791979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36006768, while the sum is 68.

The square root of 2987791979 is about 54660.6986691535. The cubic root of 2987791979 is about 1440.2905758454.

The spelling of 2987791979 in words is "two billion, nine hundred eighty-seven million, seven hundred ninety-one thousand, nine hundred seventy-nine".