86866442 has 16 divisors (see below), whose sum is σ = 147708960. Its totient is φ = 37981872.

The previous prime is 86866411. The next prime is 86866453. The reversal of 86866442 is 24466868.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 86866393 and 86866402.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 87428 + ... + 88415.

It is an arithmetic number, because the mean of its divisors is an integer number (9231810).

Almost surely, 2^86866442 is an apocalyptic number.

86866442 is a deficient number, since it is larger than the sum of its proper divisors (60842518).

86866442 is a wasteful number, since it uses less digits than its factorization.

86866442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175877.

The product of its digits is 442368, while the sum is 44.

The square root of 86866442 is about 9320.2168429710. The cubic root of 86866442 is about 442.8779020347.

The spelling of 86866442 in words is "eighty-six million, eight hundred sixty-six thousand, four hundred forty-two".