2009086940 has 48 divisors (see below), whose sum is σ = 4988088000. Its totient is φ = 665075712.

The previous prime is 2009086927. The next prime is 2009086943. The reversal of 2009086940 is 496809002.

It is a junction number, because it is equal to n+sod(n) for n = 2009086894 and 2009086903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2009086943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243365 + ... + 251484.

It is an arithmetic number, because the mean of its divisors is an integer number (103918500).

Almost surely, 2^2009086940 is an apocalyptic number.

2009086940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2009086940 is an abundant number, since it is smaller than the sum of its proper divisors (2979001060).

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

2009086940 is a wasteful number, since it uses less digits than its factorization.

2009086940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494894 (or 494892 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 2009086940 is about 44822.8394905990. The cubic root of 2009086940 is about 1261.8263051425.

The spelling of 2009086940 in words is "two billion, nine million, eighty-six thousand, nine hundred forty".