858397 has 2 divisors, whose sum is σ = 858398. Its totient is φ = 858396.

The previous prime is 858373. The next prime is 858427. The reversal of 858397 is 793858.

858397 is nontrivially palindromic in base 16.

858397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 793881 + 64516 = 891^2 + 254^2 .

It is a cyclic number.

It is not a de Polignac number, because 858397 - 2⁷ = 858269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (858307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429198 + 429199.

It is an arithmetic number, because the mean of its divisors is an integer number (429199).

2⁸⁵⁸³⁹⁷ is an apocalyptic number.

It is an amenable number.

858397 is a deficient number, since it is larger than the sum of its proper divisors (1).

858397 is an equidigital number, since it uses as much as digits as its factorization.

858397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 40.

The square root of 858397 is about 926.4971667523. The cubic root of 858397 is about 95.0377320107.

The spelling of 858397 in words is "eight hundred fifty-eight thousand, three hundred ninety-seven".