989707 has 4 divisors (see below), whose sum is σ = 993816. Its totient is φ = 985600.

The previous prime is 989687. The next prime is 989719. The reversal of 989707 is 707989.

989707 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 an emirpimes, since its reverse is a distinct semiprime: 707989 = 67 ⋅10567.

It is a cyclic number.

It is not a de Polignac number, because 989707 - 2⁷ = 989579 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 989707.

It is not an unprimeable number, because it can be changed into a prime (989777) 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, 1669 + ... + 2182.

It is an arithmetic number, because the mean of its divisors is an integer number (248454).

2⁹⁸⁹⁷⁰⁷ is an apocalyptic number.

989707 is a deficient number, since it is larger than the sum of its proper divisors (4109).

989707 is a wasteful number, since it uses less digits than its factorization.

989707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4108.

The product of its (nonzero) digits is 31752, while the sum is 40.

The square root of 989707 is about 994.8401881709. The cubic root of 989707 is about 99.6557160459.

The spelling of 989707 in words is "nine hundred eighty-nine thousand, seven hundred seven".