2009042394 has 64 divisors (see below), whose sum is σ = 4218480000. Its totient is φ = 637276160.

The previous prime is 2009042393. The next prime is 2009042447. The reversal of 2009042394 is 4932409002.

It is not an unprimeable number, because it can be changed into a prime (2009042393) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2162122 + ... + 2163050.

It is an arithmetic number, because the mean of its divisors is an integer number (65913750).

Almost surely, 2^2009042394 is an apocalyptic number.

2009042394 is an abundant number, since it is smaller than the sum of its proper divisors (2209437606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2009042394 is a wasteful number, since it uses less digits than its factorization.

2009042394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 2009042394 is about 44822.3425759966. The cubic root of 2009042394 is about 1261.8169792262.

The spelling of 2009042394 in words is "two billion, nine million, forty-two thousand, three hundred ninety-four".