993849 has 4 divisors (see below), whose sum is σ = 1325136. Its totient is φ = 662564.

The previous prime is 993841. The next prime is 993851. The reversal of 993849 is 948399.

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, and also an emirpimes, since its reverse is a distinct semiprime: 948399 = 3 ⋅316133.

It is a cyclic number.

It is not a de Polignac number, because 993849 - 2³ = 993841 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 993849.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 993849.

It is not an unprimeable number, because it can be changed into a prime (993841) 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, 165639 + ... + 165644.

It is an arithmetic number, because the mean of its divisors is an integer number (331284).

2⁹⁹³⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

993849 is a deficient number, since it is larger than the sum of its proper divisors (331287).

993849 is a wasteful number, since it uses less digits than its factorization.

993849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331286.

The product of its digits is 69984, while the sum is 42.

The square root of 993849 is about 996.9197560486. The cubic root of 993849 is about 99.7945448375.

The spelling of 993849 in words is "nine hundred ninety-three thousand, eight hundred forty-nine".