1329823 has 8 divisors (see below), whose sum is σ = 1478736. Its totient is φ = 1185600.

The previous prime is 1329799. The next prime is 1329847. The reversal of 1329823 is 3289231.

It is an interprime number because it is at equal distance from previous prime (1329799) and next prime (1329847).

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 1329823 - 2¹⁷ = 1198751 is a prime.

It is a super-2 number, since 2×1329823² = 3536858422658, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1329791 and 1329800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1329863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 558 + ... + 1723.

It is an arithmetic number, because the mean of its divisors is an integer number (184842).

2^1329823 is an apocalyptic number.

1329823 is a deficient number, since it is larger than the sum of its proper divisors (148913).

1329823 is a wasteful number, since it uses less digits than its factorization.

1329823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2345.

The product of its digits is 2592, while the sum is 28.

The square root of 1329823 is about 1153.1795176814. The cubic root of 1329823 is about 109.9675661953.

Subtracting from 1329823 its product of digits (2592), we obtain a palindrome (1327231).

The spelling of 1329823 in words is "one million, three hundred twenty-nine thousand, eight hundred twenty-three".