86938905589 has 2 divisors, whose sum is σ = 86938905590. Its totient is φ = 86938905588.

The previous prime is 86938905553. The next prime is 86938905601. The reversal of 86938905589 is 98550983968.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85707246564 + 1231659025 = 292758^2 + 35095^2 .

It is a cyclic number.

It is not a de Polignac number, because 86938905589 - 2⁷ = 86938905461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86938905289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43469452794 + 43469452795.

It is an arithmetic number, because the mean of its divisors is an integer number (43469452795).

Almost surely, 2^86938905589 is an apocalyptic number.

It is an amenable number.

86938905589 is a deficient number, since it is larger than the sum of its proper divisors (1).

86938905589 is an equidigital number, since it uses as much as digits as its factorization.

86938905589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 167961600, while the sum is 70.

The spelling of 86938905589 in words is "eighty-six billion, nine hundred thirty-eight million, nine hundred five thousand, five hundred eighty-nine".