86839619 has 2 divisors, whose sum is σ = 86839620. Its totient is φ = 86839618.

The previous prime is 86839607. The next prime is 86839631. The reversal of 86839619 is 91693868.

It is a balanced prime because it is at equal distance from previous prime (86839607) and next prime (86839631).

It is a cyclic number.

It is not a de Polignac number, because 86839619 - 2²⁴ = 70062403 is a prime.

It is a super-2 number, since 2×86839619² = 15082238856130322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (86839639) 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 as a sum of consecutive naturals, namely, 43419809 + 43419810.

It is an arithmetic number, because the mean of its divisors is an integer number (43419810).

Almost surely, 2^86839619 is an apocalyptic number.

86839619 is a deficient number, since it is larger than the sum of its proper divisors (1).

86839619 is an equidigital number, since it uses as much as digits as its factorization.

86839619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 50.

The square root of 86839619 is about 9318.7777632048. Note that the first 4 decimals coincide. The cubic root of 86839619 is about 442.8323127499.

The spelling of 86839619 in words is "eighty-six million, eight hundred thirty-nine thousand, six hundred nineteen".