2942647209 has 24 divisors (see below), whose sum is σ = 4440301632. Its totient is φ = 1874352480.

The previous prime is 2942647189. The next prime is 2942647231. The reversal of 2942647209 is 9027462492.

It is a happy number.

It is not a de Polignac number, because 2942647209 - 2⁵ = 2942647177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2942647709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 187234 + ... + 202340.

It is an arithmetic number, because the mean of its divisors is an integer number (185012568).

Almost surely, 2^2942647209 is an apocalyptic number.

It is an amenable number.

2942647209 is a deficient number, since it is larger than the sum of its proper divisors (1497654423).

2942647209 is a wasteful number, since it uses less digits than its factorization.

2942647209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16077 (or 16074 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 2942647209 is about 54246.1722981447. The cubic root of 2942647209 is about 1432.9995896414. Note that the first 3 decimals are identical.

The spelling of 2942647209 in words is "two billion, nine hundred forty-two million, six hundred forty-seven thousand, two hundred nine".