8599921858 has 16 divisors (see below), whose sum is σ = 14684452416. Its totient is φ = 3739096240.

The previous prime is 8599921853. The next prime is 8599921919. The reversal of 8599921858 is 8581299958.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 8599921858.

It is not an unprimeable number, because it can be changed into a prime (8599921853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8497441 + ... + 8498452.

It is an arithmetic number, because the mean of its divisors is an integer number (917778276).

Almost surely, 2^8599921858 is an apocalyptic number.

8599921858 is a deficient number, since it is larger than the sum of its proper divisors (6084530558).

8599921858 is a wasteful number, since it uses less digits than its factorization.

8599921858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16995929.

The product of its digits is 18662400, while the sum is 64.

The square root of 8599921858 is about 92735.7636405718. The cubic root of 8599921858 is about 2048.7934091778.

The spelling of 8599921858 in words is "eight billion, five hundred ninety-nine million, nine hundred twenty-one thousand, eight hundred fifty-eight".