860989231 has 2 divisors, whose sum is σ = 860989232. Its totient is φ = 860989230.

The previous prime is 860989219. The next prime is 860989243. The reversal of 860989231 is 132989068.

It is a balanced prime because it is at equal distance from previous prime (860989219) and next prime (860989243).

It is a cyclic number.

It is not a de Polignac number, because 860989231 - 2⁹ = 860988719 is a prime.

It is a super-2 number, since 2×860989231² = 1482604911795942722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (860989211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430494615 + 430494616.

It is an arithmetic number, because the mean of its divisors is an integer number (430494616).

Almost surely, 2^860989231 is an apocalyptic number.

860989231 is a deficient number, since it is larger than the sum of its proper divisors (1).

860989231 is an equidigital number, since it uses as much as digits as its factorization.

860989231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 860989231 is about 29342.6179983995. The cubic root of 860989231 is about 951.3330246759. Note that the first 3 decimals are identical.

The spelling of 860989231 in words is "eight hundred sixty million, nine hundred eighty-nine thousand, two hundred thirty-one".