86426472989 has 2 divisors, whose sum is σ = 86426472990. Its totient is φ = 86426472988.

The previous prime is 86426472959. The next prime is 86426473103. The reversal of 86426472989 is 98927462468.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78843024100 + 7583448889 = 280790^2 + 87083^2 .

It is a cyclic number.

It is not a de Polignac number, because 86426472989 - 2⁸ = 86426472733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86426472929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43213236494 + 43213236495.

It is an arithmetic number, because the mean of its divisors is an integer number (43213236495).

Almost surely, 2^86426472989 is an apocalyptic number.

It is an amenable number.

86426472989 is a deficient number, since it is larger than the sum of its proper divisors (1).

86426472989 is an equidigital number, since it uses as much as digits as its factorization.

86426472989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 83607552, while the sum is 65.

The spelling of 86426472989 in words is "eighty-six billion, four hundred twenty-six million, four hundred seventy-two thousand, nine hundred eighty-nine".