872279 has 4 divisors (see below), whose sum is σ = 878784. Its totient is φ = 865776.

The previous prime is 872269. The next prime is 872281. The reversal of 872279 is 972278.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 972278 = 2 ⋅486139.

It is a cyclic number.

It is not a de Polignac number, because 872279 - 2⁸ = 872023 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3047 + ... + 3320.

It is an arithmetic number, because the mean of its divisors is an integer number (219696).

2⁸⁷²²⁷⁹ is an apocalyptic number.

872279 is a deficient number, since it is larger than the sum of its proper divisors (6505).

872279 is a wasteful number, since it uses less digits than its factorization.

872279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6504.

The product of its digits is 14112, while the sum is 35.

The square root of 872279 is about 933.9587785336. The cubic root of 872279 is about 95.5473116999.

Subtracting 872279 from its reverse (972278), we obtain a palindrome (99999).

The spelling of 872279 in words is "eight hundred seventy-two thousand, two hundred seventy-nine".