860984489 has 2 divisors, whose sum is σ = 860984490. Its totient is φ = 860984488.

The previous prime is 860984479. The next prime is 860984503. The reversal of 860984489 is 984489068.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 821796889 + 39187600 = 28667^2 + 6260^2 .

It is a cyclic number.

It is not a de Polignac number, because 860984489 - 2⁴ = 860984473 is a prime.

It is a super-2 number, since 2×860984489² = 1482588580597182242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (860984459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430492244 + 430492245.

It is an arithmetic number, because the mean of its divisors is an integer number (430492245).

Almost surely, 2^860984489 is an apocalyptic number.

It is an amenable number.

860984489 is a deficient number, since it is larger than the sum of its proper divisors (1).

860984489 is an equidigital number, since it uses as much as digits as its factorization.

860984489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3981312, while the sum is 56.

The square root of 860984489 is about 29342.5371943191. The cubic root of 860984489 is about 951.3312781464.

The spelling of 860984489 in words is "eight hundred sixty million, nine hundred eighty-four thousand, four hundred eighty-nine".