989387 has 16 divisors (see below), whose sum is σ = 1224960. Its totient is φ = 780192.

The previous prime is 989381. The next prime is 989411. The reversal of 989387 is 783989.

It is not a de Polignac number, because 989387 - 2⁶ = 989323 is a prime.

It is a Duffinian number.

It is a zygodrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (989381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5633 + ... + 5805.

It is an arithmetic number, because the mean of its divisors is an integer number (76560).

2⁹⁸⁹³⁸⁷ is an apocalyptic number.

989387 is a deficient number, since it is larger than the sum of its proper divisors (235573).

989387 is a wasteful number, since it uses less digits than its factorization.

989387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242.

The product of its digits is 108864, while the sum is 44.

The square root of 989387 is about 994.6793453169. The cubic root of 989387 is about 99.6449743931.

The spelling of 989387 in words is "nine hundred eighty-nine thousand, three hundred eighty-seven".