86939141 has 2 divisors, whose sum is σ = 86939142. Its totient is φ = 86939140.

The previous prime is 86939123. The next prime is 86939161. The reversal of 86939141 is 14193968.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49984900 + 36954241 = 7070^2 + 6079^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86939141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86939161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43469570 + 43469571.

It is an arithmetic number, because the mean of its divisors is an integer number (43469571).

Almost surely, 2^86939141 is an apocalyptic number.

It is an amenable number.

86939141 is a deficient number, since it is larger than the sum of its proper divisors (1).

86939141 is an equidigital number, since it uses as much as digits as its factorization.

86939141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 41.

The square root of 86939141 is about 9324.1160975183. The cubic root of 86939141 is about 443.0014165632.

The spelling of 86939141 in words is "eighty-six million, nine hundred thirty-nine thousand, one hundred forty-one".