989877 has 8 divisors (see below), whose sum is σ = 1508416. Its totient is φ = 565632.

The previous prime is 989873. The next prime is 989887. The reversal of 989877 is 778989.

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

It is not a de Polignac number, because 989877 - 2² = 989873 is a prime.

989877 is a lucky number.

It is a zygodrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989873) 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, 23548 + ... + 23589.

It is an arithmetic number, because the mean of its divisors is an integer number (188552).

2⁹⁸⁹⁸⁷⁷ is an apocalyptic number.

It is an amenable number.

989877 is a deficient number, since it is larger than the sum of its proper divisors (518539).

989877 is a wasteful number, since it uses less digits than its factorization.

989877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47147.

The product of its digits is 254016, while the sum is 48.

The square root of 989877 is about 994.9256253610. The cubic root of 989877 is about 99.6614216072.

The spelling of 989877 in words is "nine hundred eighty-nine thousand, eight hundred seventy-seven".