9876789 has 32 divisors (see below), whose sum is σ = 16598400. Its totient is φ = 5754240.

The previous prime is 9876781. The next prime is 9876803.

9876789 is nontrivially palindromic in base 10.

9876789 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 9876789 - 2³ = 9876781 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9876781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5929 + ... + 7409.

It is an arithmetic number, because the mean of its divisors is an integer number (518700).

Almost surely, 2^9876789 is an apocalyptic number.

It is an amenable number.

9876789 is a deficient number, since it is larger than the sum of its proper divisors (6721611).

9876789 is a wasteful number, since it uses less digits than its factorization.

9876789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1522 (or 1516 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 54.

The square root of 9876789 is about 3142.7359099994. The cubic root of 9876789 is about 214.5549763724.

It can be divided in two parts, 987 and 6789, that added together give a 5-th power (7776 = 6⁵).

The spelling of 9876789 in words is "nine million, eight hundred seventy-six thousand, seven hundred eighty-nine".