872329 has 4 divisors (see below), whose sum is σ = 879120. Its totient is φ = 865540.

The previous prime is 872323. The next prime is 872351. The reversal of 872329 is 923278.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 923278 = 2 ⋅461639.

It is a cyclic number.

It is not a de Polignac number, because 872329 - 2⁹ = 871817 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

872329 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 872329.

It is not an unprimeable number, because it can be changed into a prime (872323) 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 3 ways as a sum of consecutive naturals, for example, 3199 + ... + 3460.

It is an arithmetic number, because the mean of its divisors is an integer number (219780).

2⁸⁷²³²⁹ is an apocalyptic number.

It is an amenable number.

872329 is a deficient number, since it is larger than the sum of its proper divisors (6791).

872329 is a wasteful number, since it uses less digits than its factorization.

872329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6790.

The product of its digits is 6048, while the sum is 31.

The square root of 872329 is about 933.9855459267. The cubic root of 872329 is about 95.5491372910.

The spelling of 872329 in words is "eight hundred seventy-two thousand, three hundred twenty-nine".