859399271 has 2 divisors, whose sum is σ = 859399272. Its totient is φ = 859399270.

The previous prime is 859399243. The next prime is 859399309. The reversal of 859399271 is 172993958.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 859399271 - 2⁶ = 859399207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (859399571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429699635 + 429699636.

It is an arithmetic number, because the mean of its divisors is an integer number (429699636).

Almost surely, 2^859399271 is an apocalyptic number.

859399271 is a deficient number, since it is larger than the sum of its proper divisors (1).

859399271 is an equidigital number, since it uses as much as digits as its factorization.

859399271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1224720, while the sum is 53.

The square root of 859399271 is about 29315.5124635405. The cubic root of 859399271 is about 950.7470655506.

The spelling of 859399271 in words is "eight hundred fifty-nine million, three hundred ninety-nine thousand, two hundred seventy-one".