86438293 has 2 divisors, whose sum is σ = 86438294. Its totient is φ = 86438292.

The previous prime is 86438279. The next prime is 86438371. The reversal of 86438293 is 39283468.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76440049 + 9998244 = 8743^2 + 3162^2 .

It is a cyclic number.

It is not a de Polignac number, because 86438293 - 2⁹ = 86437781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86438203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43219146 + 43219147.

It is an arithmetic number, because the mean of its divisors is an integer number (43219147).

Almost surely, 2^86438293 is an apocalyptic number.

It is an amenable number.

86438293 is a deficient number, since it is larger than the sum of its proper divisors (1).

86438293 is an equidigital number, since it uses as much as digits as its factorization.

86438293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 43.

The square root of 86438293 is about 9297.2196381499. The cubic root of 86438293 is about 442.1490815877.

The spelling of 86438293 in words is "eighty-six million, four hundred thirty-eight thousand, two hundred ninety-three".