86839613 has 6 divisors (see below), whose sum is σ = 101017566. Its totient is φ = 74433912.

The previous prime is 86839607. The next prime is 86839619. The reversal of 86839613 is 31693868.

It is an interprime number because it is at equal distance from previous prime (86839607) and next prime (86839619).

It can be written as a sum of positive squares in only one way, i.e., 86806489 + 33124 = 9317^2 + 182^2 .

It is not a de Polignac number, because 86839613 - 2⁶ = 86839549 is a prime.

It is a super-2 number, since 2×86839613² = 15082236771979538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86839619) 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 5 ways as a sum of consecutive naturals, for example, 886070 + ... + 886167.

It is an arithmetic number, because the mean of its divisors is an integer number (16836261).

Almost surely, 2^86839613 is an apocalyptic number.

It is an amenable number.

86839613 is a deficient number, since it is larger than the sum of its proper divisors (14177953).

86839613 is a wasteful number, since it uses less digits than its factorization.

86839613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772251 (or 1772244 counting only the distinct ones).

The product of its digits is 186624, while the sum is 44.

The square root of 86839613 is about 9318.7774412742. Note that the first 3 decimals coincide. The cubic root of 86839613 is about 442.8323025510.

The spelling of 86839613 in words is "eighty-six million, eight hundred thirty-nine thousand, six hundred thirteen".