2947986109 has 2 divisors, whose sum is σ = 2947986110. Its totient is φ = 2947986108.

The previous prime is 2947986077. The next prime is 2947986157. The reversal of 2947986109 is 9016897492.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2835562500 + 112423609 = 53250^2 + 10603^2 .

It is a cyclic number.

It is not a de Polignac number, because 2947986109 - 2⁵ = 2947986077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2947986109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2947986179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1473993054 + 1473993055.

It is an arithmetic number, because the mean of its divisors is an integer number (1473993055).

Almost surely, 2^2947986109 is an apocalyptic number.

It is an amenable number.

2947986109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2947986109 is an equidigital number, since it uses as much as digits as its factorization.

2947986109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1959552, while the sum is 55.

The square root of 2947986109 is about 54295.3599214519. The cubic root of 2947986109 is about 1433.8657053895.

The spelling of 2947986109 in words is "two billion, nine hundred forty-seven million, nine hundred eighty-six thousand, one hundred nine".