886609981 has 2 divisors, whose sum is σ = 886609982. Its totient is φ = 886609980.

The previous prime is 886609961. The next prime is 886610071. The reversal of 886609981 is 189906688.

886609981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 688222756 + 198387225 = 26234^2 + 14085^2 .

It is a cyclic number.

It is not a de Polignac number, because 886609981 - 2⁷ = 886609853 is a prime.

It is a super-2 number, since 2×886609981² = 1572154516817640722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (886609921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 443304990 + 443304991.

It is an arithmetic number, because the mean of its divisors is an integer number (443304991).

Almost surely, 2^886609981 is an apocalyptic number.

It is an amenable number.

886609981 is a deficient number, since it is larger than the sum of its proper divisors (1).

886609981 is an equidigital number, since it uses as much as digits as its factorization.

886609981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1492992, while the sum is 55.

The square root of 886609981 is about 29775.9967255506. The cubic root of 886609981 is about 960.6773218484.

The spelling of 886609981 in words is "eight hundred eighty-six million, six hundred nine thousand, nine hundred eighty-one".