858479 has 2 divisors, whose sum is σ = 858480. Its totient is φ = 858478.

The previous prime is 858467. The next prime is 858497. The reversal of 858479 is 974858.

Together with next prime (858497) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 858479 - 2⁴ = 858463 is a prime.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 858479.

It is not a weakly prime, because it can be changed into another prime (854479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429239 + 429240.

It is an arithmetic number, because the mean of its divisors is an integer number (429240).

2⁸⁵⁸⁴⁷⁹ is an apocalyptic number.

858479 is a deficient number, since it is larger than the sum of its proper divisors (1).

858479 is an equidigital number, since it uses as much as digits as its factorization.

858479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 41.

The square root of 858479 is about 926.5414183942. The cubic root of 858479 is about 95.0407581342.

The spelling of 858479 in words is "eight hundred fifty-eight thousand, four hundred seventy-nine".