86840393 has 16 divisors (see below), whose sum is σ = 95946240. Its totient is φ = 78278400.

The previous prime is 86840371. The next prime is 86840423. The reversal of 86840393 is 39304868.

It is a cyclic number.

It is not a de Polignac number, because 86840393 - 2⁸ = 86840137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86840393.

It is not an unprimeable number, because it can be changed into a prime (86840353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34721 + ... + 37137.

It is an arithmetic number, because the mean of its divisors is an integer number (5996640).

Almost surely, 2^86840393 is an apocalyptic number.

It is an amenable number.

86840393 is a deficient number, since it is larger than the sum of its proper divisors (9105847).

86840393 is a wasteful number, since it uses less digits than its factorization.

86840393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2528.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 86840393 is about 9318.8192921636. The cubic root of 86840393 is about 442.8336283982.

The spelling of 86840393 in words is "eighty-six million, eight hundred forty thousand, three hundred ninety-three".