8857599381 has 24 divisors (see below), whose sum is σ = 12851489664. Its totient is φ = 5878733760.

The previous prime is 8857599371. The next prime is 8857599407. The reversal of 8857599381 is 1839957588.

8857599381 is a `hidden beast` number, since 8 + 8 + 5 + 7 + 599 + 38 + 1 = 666.

It is not a de Polignac number, because 8857599381 - 2¹⁰ = 8857598357 is a prime.

It is a super-2 number, since 2×8857599381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8857599371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2374740 + ... + 2378466.

It is an arithmetic number, because the mean of its divisors is an integer number (535478736).

Almost surely, 2^8857599381 is an apocalyptic number.

It is an amenable number.

8857599381 is a deficient number, since it is larger than the sum of its proper divisors (3993890283).

8857599381 is a wasteful number, since it uses less digits than its factorization.

8857599381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4841 (or 4838 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 63.

The square root of 8857599381 is about 94114.8201985213. The cubic root of 8857599381 is about 2069.0548853581.

The spelling of 8857599381 in words is "eight billion, eight hundred fifty-seven million, five hundred ninety-nine thousand, three hundred eighty-one".