86444372293 has 2 divisors, whose sum is σ = 86444372294. Its totient is φ = 86444372292.

The previous prime is 86444372281. The next prime is 86444372317. The reversal of 86444372293 is 39227344468.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68174254404 + 18270117889 = 261102^2 + 135167^2 .

It is a cyclic number.

It is not a de Polignac number, because 86444372293 - 2²¹ = 86442275141 is a prime.

It is a super-2 number, since 2×86444372293² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 86444372293.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86444372233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43222186146 + 43222186147.

It is an arithmetic number, because the mean of its divisors is an integer number (43222186147).

Almost surely, 2^86444372293 is an apocalyptic number.

It is an amenable number.

86444372293 is a deficient number, since it is larger than the sum of its proper divisors (1).

86444372293 is an equidigital number, since it uses as much as digits as its factorization.

86444372293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6967296, while the sum is 52.

The spelling of 86444372293 in words is "eighty-six billion, four hundred forty-four million, three hundred seventy-two thousand, two hundred ninety-three".