867889289 has 2 divisors, whose sum is σ = 867889290. Its totient is φ = 867889288.

The previous prime is 867889247. The next prime is 867889331. The reversal of 867889289 is 982988768.

It is a balanced prime because it is at equal distance from previous prime (867889247) and next prime (867889331).

It can be written as a sum of positive squares in only one way, i.e., 753228025 + 114661264 = 27445^2 + 10708^2 .

It is a cyclic number.

It is not a de Polignac number, because 867889289 - 2²⁰ = 866840713 is a prime.

It is a Chen prime.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433944644 + 433944645.

It is an arithmetic number, because the mean of its divisors is an integer number (433944645).

Almost surely, 2^867889289 is an apocalyptic number.

It is an amenable number.

867889289 is a deficient number, since it is larger than the sum of its proper divisors (1).

867889289 is an equidigital number, since it uses as much as digits as its factorization.

867889289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27869184, while the sum is 65.

The square root of 867889289 is about 29459.9607772991. The cubic root of 867889289 is about 953.8676267100.

The spelling of 867889289 in words is "eight hundred sixty-seven million, eight hundred eighty-nine thousand, two hundred eighty-nine".