891857996 has 12 divisors (see below), whose sum is σ = 1614570720. Its totient is φ = 430552080.

The previous prime is 891857987. The next prime is 891857999. The reversal of 891857996 is 699758198.

It is not an unprimeable number, because it can be changed into a prime (891857999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3844100 + ... + 3844331.

It is an arithmetic number, because the mean of its divisors is an integer number (134547560).

Almost surely, 2^891857996 is an apocalyptic number.

It is an amenable number.

891857996 is a deficient number, since it is larger than the sum of its proper divisors (722712724).

891857996 is a wasteful number, since it uses less digits than its factorization.

891857996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7688464 (or 7688462 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 62.

The square root of 891857996 is about 29863.9916287157. The cubic root of 891857996 is about 962.5690721443.

The spelling of 891857996 in words is "eight hundred ninety-one million, eight hundred fifty-seven thousand, nine hundred ninety-six".