872849 has 8 divisors (see below), whose sum is σ = 911400. Its totient is φ = 835200.

The previous prime is 872843. The next prime is 872863. The reversal of 872849 is 948278.

It can be written as a sum of positive squares in 4 ways, for example, as 4225 + 868624 = 65^2 + 932^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-872849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 872849.

It is not an unprimeable number, because it can be changed into a prime (872843) 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, 2327 + ... + 2675.

It is an arithmetic number, because the mean of its divisors is an integer number (113925).

2⁸⁷²⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

872849 is a deficient number, since it is larger than the sum of its proper divisors (38551).

872849 is a wasteful number, since it uses less digits than its factorization.

872849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451.

The product of its digits is 32256, while the sum is 38.

The square root of 872849 is about 934.2638813526. The cubic root of 872849 is about 95.5681193043.

The spelling of 872849 in words is "eight hundred seventy-two thousand, eight hundred forty-nine".