86446881 has 6 divisors (see below), whose sum is σ = 124867730. Its totient is φ = 57631248.

The previous prime is 86446799. The next prime is 86446897. The reversal of 86446881 is 18864468.

It can be written as a sum of positive squares in only one way, i.e., 83174400 + 3272481 = 9120^2 + 1809^2 .

It is not a de Polignac number, because 86446881 - 2¹⁰ = 86445857 is a prime.

It is a super-2 number, since 2×86446881² = 14946126469256322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86446681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4802596 + ... + 4802613.

Almost surely, 2^86446881 is an apocalyptic number.

It is an amenable number.

86446881 is a deficient number, since it is larger than the sum of its proper divisors (38420849).

86446881 is a wasteful number, since it uses less digits than its factorization.

86446881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9605215 (or 9605212 counting only the distinct ones).

The product of its digits is 294912, while the sum is 45.

The square root of 86446881 is about 9297.6814851876. The cubic root of 86446881 is about 442.1637242129.

The spelling of 86446881 in words is "eighty-six million, four hundred forty-six thousand, eight hundred eighty-one".