988709 has 4 divisors (see below), whose sum is σ = 990720. Its totient is φ = 986700.

The previous prime is 988693. The next prime is 988711. The reversal of 988709 is 907889.

988709 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 988709 - 2⁴ = 988693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (988759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284 + ... + 1434.

It is an arithmetic number, because the mean of its divisors is an integer number (247680).

2⁹⁸⁸⁷⁰⁹ is an apocalyptic number.

It is an amenable number.

988709 is a deficient number, since it is larger than the sum of its proper divisors (2011).

988709 is a wasteful number, since it uses less digits than its factorization.

988709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 988709 is about 994.3384735592. The cubic root of 988709 is about 99.6222078617.

The spelling of 988709 in words is "nine hundred eighty-eight thousand, seven hundred nine".