989893 has 4 divisors (see below), whose sum is σ = 1048140. Its totient is φ = 931648.

The previous prime is 989887. The next prime is 989909. The reversal of 989893 is 398989.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 717409 + 272484 = 847^2 + 522^2 .

It is a cyclic number.

It is not a de Polignac number, because 989893 - 2⁹ = 989381 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 (989803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29098 + ... + 29131.

It is an arithmetic number, because the mean of its divisors is an integer number (262035).

2⁹⁸⁹⁸⁹³ is an apocalyptic number.

It is an amenable number.

989893 is a deficient number, since it is larger than the sum of its proper divisors (58247).

989893 is a wasteful number, since it uses less digits than its factorization.

989893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58246.

The product of its digits is 139968, while the sum is 46.

The square root of 989893 is about 994.9336661306. The cubic root of 989893 is about 99.6619585675.

The spelling of 989893 in words is "nine hundred eighty-nine thousand, eight hundred ninety-three".