4009807640 has 32 divisors (see below), whose sum is σ = 9072486000. Its totient is φ = 1594959744.

The previous prime is 4009807639. The next prime is 4009807687. The reversal of 4009807640 is 467089004.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 4009807594 and 4009807603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272855 + ... + 287174.

Almost surely, 2^4009807640 is an apocalyptic number.

4009807640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4009807640 is an abundant number, since it is smaller than the sum of its proper divisors (5062678360).

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

4009807640 is a wasteful number, since it uses less digits than its factorization.

4009807640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560219 (or 560215 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 4009807640 is about 63323.0419357756. The cubic root of 4009807640 is about 1588.6973812217.

The spelling of 4009807640 in words is "four billion, nine million, eight hundred seven thousand, six hundred forty".