6860000989 has 4 divisors (see below), whose sum is σ = 6860510460. Its totient is φ = 6859491520.

The previous prime is 6860000981. The next prime is 6860001017. The reversal of 6860000989 is 9890000686.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9890000686 = 2 ⋅4945000343.

It can be written as a sum of positive squares in 2 ways, for example, as 1809056089 + 5050944900 = 42533^2 + 71070^2 .

It is a cyclic number.

It is not a de Polignac number, because 6860000989 - 2³ = 6860000981 is a prime.

It is a super-2 number, since 2×6860000989² = 94119227138161956242, which contains 22 as substring.

6860000989 is a strobogrammatic number because it is the same when read upside-down.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6860000981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233974 + ... + 261655.

It is an arithmetic number, because the mean of its divisors is an integer number (1715127615).

Almost surely, 2^6860000989 is an apocalyptic number.

It is an amenable number.

6860000989 is a deficient number, since it is larger than the sum of its proper divisors (509471).

6860000989 is a wasteful number, since it uses less digits than its factorization.

6860000989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509470.

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

The square root of 6860000989 is about 82825.1229338055. The cubic root of 6860000989 is about 1900.0924229280.

The spelling of 6860000989 in words is "six billion, eight hundred sixty million, nine hundred eighty-nine", and thus it is an aban number.