86905089 has 8 divisors (see below), whose sum is σ = 128748320. Its totient is φ = 57936708.

The previous prime is 86905087. The next prime is 86905099. The reversal of 86905089 is 98050968.

It is not a de Polignac number, because 86905089 - 2¹ = 86905087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86905081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1609327 + ... + 1609380.

It is an arithmetic number, because the mean of its divisors is an integer number (16093540).

Almost surely, 2^86905089 is an apocalyptic number.

It is an amenable number.

86905089 is a deficient number, since it is larger than the sum of its proper divisors (41843231).

86905089 is a wasteful number, since it uses less digits than its factorization.

86905089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3218716 (or 3218710 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 86905089 is about 9322.2899010919. The cubic root of 86905089 is about 442.9435712936.

The spelling of 86905089 in words is "eighty-six million, nine hundred five thousand, eighty-nine".