878291 has 2 divisors, whose sum is σ = 878292. Its totient is φ = 878290.

The previous prime is 878287. The next prime is 878299. The reversal of 878291 is 192878.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 878291 - 2² = 878287 is a prime.

It is not a weakly prime, because it can be changed into another prime (878299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439145 + 439146.

It is an arithmetic number, because the mean of its divisors is an integer number (439146).

2⁸⁷⁸²⁹¹ is an apocalyptic number.

878291 is a deficient number, since it is larger than the sum of its proper divisors (1).

878291 is an equidigital number, since it uses as much as digits as its factorization.

878291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 35.

The square root of 878291 is about 937.1718092218. The cubic root of 878291 is about 95.7663225723.

The spelling of 878291 in words is "eight hundred seventy-eight thousand, two hundred ninety-one".