2947649239 has 2 divisors, whose sum is σ = 2947649240. Its totient is φ = 2947649238.

The previous prime is 2947649197. The next prime is 2947649251. The reversal of 2947649239 is 9329467492.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2947649239 - 2¹¹ = 2947647191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2947649239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2947646239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1473824619 + 1473824620.

It is an arithmetic number, because the mean of its divisors is an integer number (1473824620).

Almost surely, 2^2947649239 is an apocalyptic number.

2947649239 is a deficient number, since it is larger than the sum of its proper divisors (1).

2947649239 is an equidigital number, since it uses as much as digits as its factorization.

2947649239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5878656, while the sum is 55.

The square root of 2947649239 is about 54292.2576340310. The cubic root of 2947649239 is about 1433.8110867762.

The spelling of 2947649239 in words is "two billion, nine hundred forty-seven million, six hundred forty-nine thousand, two hundred thirty-nine".