853993 has 8 divisors (see below), whose sum is σ = 1027520. Its totient is φ = 693360.

The previous prime is 853981. The next prime is 853999. The reversal of 853993 is 399358.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 853993 - 2⁹ = 853481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (853999) 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 7 ways as a sum of consecutive naturals, for example, 3078 + ... + 3343.

It is an arithmetic number, because the mean of its divisors is an integer number (128440).

2⁸⁵³⁹⁹³ is an apocalyptic number.

It is an amenable number.

853993 is a deficient number, since it is larger than the sum of its proper divisors (173527).

853993 is a wasteful number, since it uses less digits than its factorization.

853993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6447.

The product of its digits is 29160, while the sum is 37.

The square root of 853993 is about 924.1174167821. The cubic root of 853993 is about 94.8749231155.

The spelling of 853993 in words is "eight hundred fifty-three thousand, nine hundred ninety-three".