86357589449 has 2 divisors, whose sum is σ = 86357589450. Its totient is φ = 86357589448.

The previous prime is 86357589443. The next prime is 86357589473. The reversal of 86357589449 is 94498575368.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57101881600 + 29255707849 = 238960^2 + 171043^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86357589449 is a prime.

It is a super-2 number, since 2×86357589449² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (86357589443) 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 as a sum of consecutive naturals, namely, 43178794724 + 43178794725.

It is an arithmetic number, because the mean of its divisors is an integer number (43178794725).

Almost surely, 2^86357589449 is an apocalyptic number.

It is an amenable number.

86357589449 is a deficient number, since it is larger than the sum of its proper divisors (1).

86357589449 is an equidigital number, since it uses as much as digits as its factorization.

86357589449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 261273600, while the sum is 68.

The spelling of 86357589449 in words is "eighty-six billion, three hundred fifty-seven million, five hundred eighty-nine thousand, four hundred forty-nine".