86217084 has 18 divisors (see below), whose sum is σ = 217937720. Its totient is φ = 28739016.

The previous prime is 86217083. The next prime is 86217121. The reversal of 86217084 is 48071268.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2394919 = 86217084 / (8 + 6 + 2 + 1 + 7 + 0 + 8 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86217083) 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 5 ways as a sum of consecutive naturals, for example, 1197424 + ... + 1197495.

Almost surely, 2^86217084 is an apocalyptic number.

It is an amenable number.

86217084 is an abundant number, since it is smaller than the sum of its proper divisors (131720636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86217084 is a wasteful number, since it uses less digits than its factorization.

86217084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2394929 (or 2394924 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 86217084 is about 9285.3155035249. The cubic root of 86217084 is about 441.7715833504.

The spelling of 86217084 in words is "eighty-six million, two hundred seventeen thousand, eighty-four".