823493 has 8 divisors (see below), whose sum is σ = 919776. Its totient is φ = 730800.

The previous prime is 823489. The next prime is 823499. The reversal of 823493 is 394328.

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 823493 - 2² = 823489 is a prime.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 823493.

It is not an unprimeable number, because it can be changed into a prime (823499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398 + ... + 1343.

It is an arithmetic number, because the mean of its divisors is an integer number (114972).

2⁸²³⁴⁹³ is an apocalyptic number.

It is an amenable number.

823493 is a deficient number, since it is larger than the sum of its proper divisors (96283).

823493 is a wasteful number, since it uses less digits than its factorization.

823493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1795.

The product of its digits is 5184, while the sum is 29.

The square root of 823493 is about 907.4651508460. The cubic root of 823493 is about 93.7317309587.

The spelling of 823493 in words is "eight hundred twenty-three thousand, four hundred ninety-three".