86894391 has 32 divisors (see below), whose sum is σ = 129024000. Its totient is φ = 51768288.

The previous prime is 86894359. The next prime is 86894393. The reversal of 86894391 is 19349868.

It is not a de Polignac number, because 86894391 - 2⁵ = 86894359 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86894391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86894393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 103150 + ... + 103988.

It is an arithmetic number, because the mean of its divisors is an integer number (4032000).

Almost surely, 2^86894391 is an apocalyptic number.

86894391 is a deficient number, since it is larger than the sum of its proper divisors (42129609).

86894391 is a wasteful number, since it uses less digits than its factorization.

86894391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963.

The product of its digits is 373248, while the sum is 48.

The square root of 86894391 is about 9321.7160973718. The cubic root of 86894391 is about 442.9253951245.

It can be divided in two parts, 868 and 94391, that added together give a palindrome (95259).

The spelling of 86894391 in words is "eighty-six million, eight hundred ninety-four thousand, three hundred ninety-one".