989853 has 4 divisors (see below), whose sum is σ = 1319808. Its totient is φ = 659900.

The previous prime is 989839. The next prime is 989869. The reversal of 989853 is 358989.

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 989853 - 2⁴ = 989837 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989803) 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, 164973 + ... + 164978.

It is an arithmetic number, because the mean of its divisors is an integer number (329952).

2⁹⁸⁹⁸⁵³ is an apocalyptic number.

It is an amenable number.

989853 is a deficient number, since it is larger than the sum of its proper divisors (329955).

989853 is a wasteful number, since it uses less digits than its factorization.

989853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329954.

The product of its digits is 77760, while the sum is 42.

The square root of 989853 is about 994.9135640848. The cubic root of 989853 is about 99.6606161558.

The spelling of 989853 in words is "nine hundred eighty-nine thousand, eight hundred fifty-three".