2009941947 has 96 divisors (see below), whose sum is σ = 3390266880. Its totient is φ = 1137991680.

The previous prime is 2009941939. The next prime is 2009941993. The reversal of 2009941947 is 7491499002.

It is a happy number.

It is not a de Polignac number, because 2009941947 - 2³ = 2009941939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2009941247) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 10202653 + ... + 10202849.

It is an arithmetic number, because the mean of its divisors is an integer number (35315280).

Almost surely, 2^2009941947 is an apocalyptic number.

2009941947 is a deficient number, since it is larger than the sum of its proper divisors (1380324933).

2009941947 is a wasteful number, since it uses less digits than its factorization.

2009941947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373 (or 370 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 2009941947 is about 44832.3761025445. The cubic root of 2009941947 is about 1262.0052782029.

The spelling of 2009941947 in words is "two billion, nine million, nine hundred forty-one thousand, nine hundred forty-seven".