86324389 has 2 divisors, whose sum is σ = 86324390. Its totient is φ = 86324388.

The previous prime is 86324369. The next prime is 86324401. The reversal of 86324389 is 98342368.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77739489 + 8584900 = 8817^2 + 2930^2 .

It is a cyclic number.

It is not a de Polignac number, because 86324389 - 2⁷ = 86324261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86324369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43162194 + 43162195.

It is an arithmetic number, because the mean of its divisors is an integer number (43162195).

Almost surely, 2^86324389 is an apocalyptic number.

It is an amenable number.

86324389 is a deficient number, since it is larger than the sum of its proper divisors (1).

86324389 is an equidigital number, since it uses as much as digits as its factorization.

86324389 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 86324389 is about 9291.0919164542. The cubic root of 86324389 is about 441.9547823361.

It can be divided in two parts, 863 and 24389, that added together give a palindrome (25252).

The spelling of 86324389 in words is "eighty-six million, three hundred twenty-four thousand, three hundred eighty-nine".