823964 has 6 divisors (see below), whose sum is σ = 1441944. Its totient is φ = 411980.

The previous prime is 823961. The next prime is 823967. The reversal of 823964 is 469328.

823964 is nontrivially palindromic in base 16.

It is an interprime number because it is at equal distance from previous prime (823961) and next prime (823967).

It is a self number, because there is not a number n which added to its sum of digits gives 823964.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102992 + ... + 102999.

It is an arithmetic number, because the mean of its divisors is an integer number (240324).

2⁸²³⁹⁶⁴ is an apocalyptic number.

It is an amenable number.

823964 is a deficient number, since it is larger than the sum of its proper divisors (617980).

823964 is a wasteful number, since it uses less digits than its factorization.

823964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205995 (or 205993 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 823964 is about 907.7246278470. The cubic root of 823964 is about 93.7495976279.

The spelling of 823964 in words is "eight hundred twenty-three thousand, nine hundred sixty-four".