872099 has 2 divisors, whose sum is σ = 872100. Its totient is φ = 872098.

The previous prime is 872089. The next prime is 872107. The reversal of 872099 is 990278.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-872099 is a prime.

It is a Chen prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (872089) 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 as a sum of consecutive naturals, namely, 436049 + 436050.

It is an arithmetic number, because the mean of its divisors is an integer number (436050).

2⁸⁷²⁰⁹⁹ is an apocalyptic number.

872099 is a deficient number, since it is larger than the sum of its proper divisors (1).

872099 is an equidigital number, since it uses as much as digits as its factorization.

872099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 872099 is about 933.8624095658. The cubic root of 872099 is about 95.5407389943.

The spelling of 872099 in words is "eight hundred seventy-two thousand, ninety-nine".