8709807440 has 40 divisors (see below), whose sum is σ = 21130754688. Its totient is φ = 3332447360.

The previous prime is 8709807439. The next prime is 8709807479. The reversal of 8709807440 is 447089078.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2364956 + ... + 2368635.

Almost surely, 2^8709807440 is an apocalyptic number.

8709807440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8709807440 is an abundant number, since it is smaller than the sum of its proper divisors (12420947248).

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

8709807440 is a wasteful number, since it uses less digits than its factorization.

8709807440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4733627 (or 4733621 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 8709807440 is about 93326.3491196350. The cubic root of 8709807440 is about 2057.4826635718.

The spelling of 8709807440 in words is "eight billion, seven hundred nine million, eight hundred seven thousand, four hundred forty".