822403 has 4 divisors (see below), whose sum is σ = 824328. Its totient is φ = 820480.

The previous prime is 822391. The next prime is 822407. The reversal of 822403 is 304228.

It is a happy number.

822403 is a nontrivial binomial coefficient, being equal to C(1283, 2).

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 822403 - 2¹³ = 814211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (822407) 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, 1 + ... + 1282.

It is an arithmetic number, because the mean of its divisors is an integer number (206082).

2⁸²²⁴⁰³ is an apocalyptic number.

822403 is the 1282-nd triangular number.

822403 is the 428-th centered nonagonal number.

822403 is a deficient number, since it is larger than the sum of its proper divisors (1925).

822403 is a wasteful number, since it uses less digits than its factorization.

822403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1924.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 822403 is about 906.8643779530. The cubic root of 822403 is about 93.6903573233.

It can be divided in two parts, 822 and 403, that added together give a triangular number (1225 = T₄₉).

The spelling of 822403 in words is "eight hundred twenty-two thousand, four hundred three".