8857845491 has 16 divisors (see below), whose sum is σ = 10087338240. Its totient is φ = 7699343520.

The previous prime is 8857845443. The next prime is 8857845499. The reversal of 8857845491 is 1945487588.

It is not a de Polignac number, because 8857845491 - 2²⁶ = 8790736627 is a prime.

It is a super-2 number, since 2×8857845491² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8857845491.

It is not an unprimeable number, because it can be changed into a prime (8857845499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 794705 + ... + 805773.

It is an arithmetic number, because the mean of its divisors is an integer number (630458640).

Almost surely, 2^8857845491 is an apocalyptic number.

8857845491 is a deficient number, since it is larger than the sum of its proper divisors (1229492749).

8857845491 is a wasteful number, since it uses less digits than its factorization.

8857845491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14266.

The product of its digits is 12902400, while the sum is 59.

The square root of 8857845491 is about 94116.1276880854. The cubic root of 8857845491 is about 2069.0740482020.

The spelling of 8857845491 in words is "eight billion, eight hundred fifty-seven million, eight hundred forty-five thousand, four hundred ninety-one".