853397 has 4 divisors (see below), whose sum is σ = 856716. Its totient is φ = 850080.

The previous prime is 853387. The next prime is 853403. The reversal of 853397 is 793358.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 793358 = 2 ⋅396679.

It can be written as a sum of positive squares in 2 ways, for example, as 654481 + 198916 = 809^2 + 446^2 .

It is a cyclic number.

It is not a de Polignac number, because 853397 - 2¹² = 849301 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 (853357) 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, 1238 + ... + 1799.

It is an arithmetic number, because the mean of its divisors is an integer number (214179).

2⁸⁵³³⁹⁷ is an apocalyptic number.

It is an amenable number.

853397 is a deficient number, since it is larger than the sum of its proper divisors (3319).

853397 is a wasteful number, since it uses less digits than its factorization.

853397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3318.

The product of its digits is 22680, while the sum is 35.

The square root of 853397 is about 923.7948906548. The cubic root of 853397 is about 94.8528469730.

The spelling of 853397 in words is "eight hundred fifty-three thousand, three hundred ninety-seven".