86404215 has 24 divisors (see below), whose sum is σ = 144532080. Its totient is φ = 44074624.

The previous prime is 86404193. The next prime is 86404247. The reversal of 86404215 is 51240468.

It is not a de Polignac number, because 86404215 - 2²⁰ = 85355639 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2491 + ... + 13379.

It is an arithmetic number, because the mean of its divisors is an integer number (6022170).

Almost surely, 2^86404215 is an apocalyptic number.

86404215 is a deficient number, since it is larger than the sum of its proper divisors (58127865).

86404215 is a wasteful number, since it uses less digits than its factorization.

86404215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10943 (or 10920 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 86404215 is about 9295.3867590327. The cubic root of 86404215 is about 442.0909686981.

The spelling of 86404215 in words is "eighty-six million, four hundred four thousand, two hundred fifteen".