2179999008 has 240 divisors, whose sum is σ = 7053165504. Its totient is φ = 655050240.

The previous prime is 2179998959. The next prime is 2179999037. The reversal of 2179999008 is 8009999712.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4476141 + ... + 4476627.

Almost surely, 2^2179999008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2179999008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3526582752).

2179999008 is an abundant number, since it is smaller than the sum of its proper divisors (4873166496).

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

2179999008 is a wasteful number, since it uses less digits than its factorization.

2179999008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677 (or 660 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 54.

The square root of 2179999008 is about 46690.4594965610. The cubic root of 2179999008 is about 1296.6380602975.

The spelling of 2179999008 in words is "two billion, one hundred seventy-nine million, nine hundred ninety-nine thousand, eight".