859850897 has 4 divisors (see below), whose sum is σ = 860231460. Its totient is φ = 859470336.

The previous prime is 859850843. The next prime is 859850963. The reversal of 859850897 is 798058958.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 798058958 = 2 ⋅399029479.

It can be written as a sum of positive squares in 2 ways, for example, as 831803281 + 28047616 = 28841^2 + 5296^2 .

It is a cyclic number.

It is not a de Polignac number, because 859850897 - 2²⁶ = 792742033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (859856897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186872 + ... + 191417.

It is an arithmetic number, because the mean of its divisors is an integer number (215057865).

Almost surely, 2^859850897 is an apocalyptic number.

It is an amenable number.

859850897 is a deficient number, since it is larger than the sum of its proper divisors (380563).

859850897 is a wasteful number, since it uses less digits than its factorization.

859850897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380562.

The product of its (nonzero) digits is 7257600, while the sum is 59.

The square root of 859850897 is about 29323.2143019827. The cubic root of 859850897 is about 950.9135798881.

It can be divided in two parts, 8598 and 50897, that added together give a palindrome (59495).

The spelling of 859850897 in words is "eight hundred fifty-nine million, eight hundred fifty thousand, eight hundred ninety-seven".