86918427 has 12 divisors (see below), whose sum is σ = 130199160. Its totient is φ = 57945456.

The previous prime is 86918411. The next prime is 86918431. The reversal of 86918427 is 72481968.

It is not a de Polignac number, because 86918427 - 2⁴ = 86918411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86918827) 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 11 ways as a sum of consecutive naturals, for example, 178602 + ... + 179087.

It is an arithmetic number, because the mean of its divisors is an integer number (10849930).

Almost surely, 2^86918427 is an apocalyptic number.

86918427 is a deficient number, since it is larger than the sum of its proper divisors (43280733).

86918427 is an equidigital number, since it uses as much as digits as its factorization.

86918427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357704 (or 357692 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 86918427 is about 9323.0052558175. The cubic root of 86918427 is about 442.9662307995.

The spelling of 86918427 in words is "eighty-six million, nine hundred eighteen thousand, four hundred twenty-seven".