86397278 has 16 divisors (see below), whose sum is σ = 141546096. Its totient is φ = 39224640.

The previous prime is 86397271. The next prime is 86397287. The reversal of 86397278 is 87279368.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86397271) 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 7 ways as a sum of consecutive naturals, for example, 22250 + ... + 25842.

It is an arithmetic number, because the mean of its divisors is an integer number (8846631).

Almost surely, 2^86397278 is an apocalyptic number.

86397278 is a deficient number, since it is larger than the sum of its proper divisors (55148818).

86397278 is a wasteful number, since it uses less digits than its factorization.

86397278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4699.

The product of its digits is 1016064, while the sum is 50.

The square root of 86397278 is about 9295.0136094575. The cubic root of 86397278 is about 442.0791372262.

The spelling of 86397278 in words is "eighty-six million, three hundred ninety-seven thousand, two hundred seventy-eight".