836489 has 4 divisors (see below), whose sum is σ = 838656. Its totient is φ = 834324.

The previous prime is 836477. The next prime is 836491. The reversal of 836489 is 984638.

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: 984638 = 2 ⋅492319.

It is a cyclic number.

It is not a de Polignac number, because 836489 - 2⁸ = 836233 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 (836449) 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, 329 + ... + 1334.

It is an arithmetic number, because the mean of its divisors is an integer number (209664).

2⁸³⁶⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

836489 is a deficient number, since it is larger than the sum of its proper divisors (2167).

836489 is a wasteful number, since it uses less digits than its factorization.

836489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2166.

The product of its digits is 41472, while the sum is 38.

The square root of 836489 is about 914.5977257789. The cubic root of 836489 is about 94.2222371070. Note that the first 4 decimals are identical.

It can be divided in two parts, 836 and 489, that multiplied together give a palindrome (408804).

The spelling of 836489 in words is "eight hundred thirty-six thousand, four hundred eighty-nine".