8405979870 has 16 divisors (see below), whose sum is σ = 20174351760. Its totient is φ = 2241594624.

The previous prime is 8405979833. The next prime is 8405979877. The reversal of 8405979870 is 789795048.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8405979870.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8405979877) 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 7 ways as a sum of consecutive naturals, for example, 140099635 + ... + 140099694.

It is an arithmetic number, because the mean of its divisors is an integer number (1260896985).

Almost surely, 2^8405979870 is an apocalyptic number.

8405979870 is an abundant number, since it is smaller than the sum of its proper divisors (11768371890).

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

8405979870 is a wasteful number, since it uses less digits than its factorization.

8405979870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280199339.

The product of its (nonzero) digits is 5080320, while the sum is 57.

The square root of 8405979870 is about 91684.1309605975. The cubic root of 8405979870 is about 2033.2749736602.

The spelling of 8405979870 in words is "eight billion, four hundred five million, nine hundred seventy-nine thousand, eight hundred seventy".