989633 has 4 divisors (see below), whose sum is σ = 1002240. Its totient is φ = 977028.

The previous prime is 989629. The next prime is 989641. The reversal of 989633 is 336989.

It is a happy number.

989633 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 989633 - 2² = 989629 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (989623) 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, 6185 + ... + 6342.

It is an arithmetic number, because the mean of its divisors is an integer number (250560).

2⁹⁸⁹⁶³³ is an apocalyptic number.

It is an amenable number.

989633 is a deficient number, since it is larger than the sum of its proper divisors (12607).

989633 is a wasteful number, since it uses less digits than its factorization.

989633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12606.

The product of its digits is 34992, while the sum is 38.

The square root of 989633 is about 994.8029955725. The cubic root of 989633 is about 99.6532322445.

The spelling of 989633 in words is "nine hundred eighty-nine thousand, six hundred thirty-three".