823401 has 12 divisors (see below), whose sum is σ = 1198080. Its totient is φ = 544920.

The previous prime is 823399. The next prime is 823421. The reversal of 823401 is 104328.

It is a happy number.

It is not a de Polignac number, because 823401 - 2¹ = 823399 is a prime.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (823421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1480 + ... + 1958.

It is an arithmetic number, because the mean of its divisors is an integer number (99840).

2⁸²³⁴⁰¹ is an apocalyptic number.

It is an amenable number.

823401 is a deficient number, since it is larger than the sum of its proper divisors (374679).

823401 is a wasteful number, since it uses less digits than its factorization.

823401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676 (or 673 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 823401 is about 907.4144587783. The cubic root of 823401 is about 93.7282402832.

Adding to 823401 its reverse (104328), we get a palindrome (927729).

It can be divided in two parts, 8 and 23401, that added together give a square (23409 = 153²).

The spelling of 823401 in words is "eight hundred twenty-three thousand, four hundred one".