8405879632 has 20 divisors (see below), whose sum is σ = 16726565716. Its totient is φ = 4089346560.

The previous prime is 8405879611. The next prime is 8405879663. The reversal of 8405879632 is 2369785048.

It can be written as a sum of positive squares in 2 ways, for example, as 2841316416 + 5564563216 = 53304^2 + 74596^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 8405879632.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7098969 + ... + 7100152.

Almost surely, 2^8405879632 is an apocalyptic number.

It is an amenable number.

8405879632 is a deficient number, since it is larger than the sum of its proper divisors (8320686084).

8405879632 is a wasteful number, since it uses less digits than its factorization.

8405879632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14199166 (or 14199160 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 52.

The square root of 8405879632 is about 91683.5843103879. The cubic root of 8405879632 is about 2033.2668916269.

The spelling of 8405879632 in words is "eight billion, four hundred five million, eight hundred seventy-nine thousand, six hundred thirty-two".