867389 has 2 divisors, whose sum is σ = 867390. Its totient is φ = 867388.

The previous prime is 867371. The next prime is 867397. The reversal of 867389 is 983768.

867389 is nontrivially palindromic in base 16.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 444889 + 422500 = 667^2 + 650^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-867389 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (867319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433694 + 433695.

It is an arithmetic number, because the mean of its divisors is an integer number (433695).

2⁸⁶⁷³⁸⁹ is an apocalyptic number.

It is an amenable number.

867389 is a deficient number, since it is larger than the sum of its proper divisors (1).

867389 is an equidigital number, since it uses as much as digits as its factorization.

867389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 41.

The square root of 867389 is about 931.3372106815. The cubic root of 867389 is about 95.3684307934.

The spelling of 867389 in words is "eight hundred sixty-seven thousand, three hundred eighty-nine".