2009449005 has 32 divisors (see below), whose sum is σ = 3341900160. Its totient is φ = 1029799680.

The previous prime is 2009449003. The next prime is 2009449019. The reversal of 2009449005 is 5009449002.

It is not a de Polignac number, because 2009449005 - 2¹ = 2009449003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2009449003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80839 + ... + 102731.

It is an arithmetic number, because the mean of its divisors is an integer number (104434380).

Almost surely, 2^2009449005 is an apocalyptic number.

It is an amenable number.

2009449005 is a deficient number, since it is larger than the sum of its proper divisors (1332451155).

2009449005 is a wasteful number, since it uses less digits than its factorization.

2009449005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22141.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 2009449005 is about 44826.8781536256. The cubic root of 2009449005 is about 1261.9021000538.

The spelling of 2009449005 in words is "two billion, nine million, four hundred forty-nine thousand, five".