987876789 has 8 divisors (see below), whose sum is σ = 1317386400. Its totient is φ = 658475856.

The previous prime is 987876767. The next prime is 987876803. The reversal of 987876789 is 987678789.

987876789 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 987876789 - 2¹³ = 987868597 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 (987876689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2847 + ... + 44540.

It is an arithmetic number, because the mean of its divisors is an integer number (164673300).

Almost surely, 2^987876789 is an apocalyptic number.

It is an amenable number.

987876789 is a deficient number, since it is larger than the sum of its proper divisors (329509611).

987876789 is a wasteful number, since it uses less digits than its factorization.

987876789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54339.

The product of its digits is 85349376, while the sum is 69.

The square root of 987876789 is about 31430.5072978468. The cubic root of 987876789 is about 995.9424885342.

The spelling of 987876789 in words is "nine hundred eighty-seven million, eight hundred seventy-six thousand, seven hundred eighty-nine".