9880891 has 2 divisors, whose sum is σ = 9880892. Its totient is φ = 9880890.

The previous prime is 9880873. The next prime is 9880921. The reversal of 9880891 is 1980889.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9880891 - 2¹⁵ = 9848123 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (9880811) 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 as a sum of consecutive naturals, namely, 4940445 + 4940446.

It is an arithmetic number, because the mean of its divisors is an integer number (4940446).

Almost surely, 2^9880891 is an apocalyptic number.

9880891 is a deficient number, since it is larger than the sum of its proper divisors (1).

9880891 is an equidigital number, since it uses as much as digits as its factorization.

9880891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 43.

The square root of 9880891 is about 3143.3884583360. The cubic root of 9880891 is about 214.5846750495.

The spelling of 9880891 in words is "nine million, eight hundred eighty thousand, eight hundred ninety-one".