859839122 has 4 divisors (see below), whose sum is σ = 1289758686. Its totient is φ = 429919560.

The previous prime is 859839121. The next prime is 859839131. The reversal of 859839122 is 221938958.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 221938958 = 2 ⋅110969479.

It can be written as a sum of positive squares in only one way, i.e., 759057601 + 100781521 = 27551^2 + 10039^2 .

It is not an unprimeable number, because it can be changed into a prime (859839121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214959779 + ... + 214959782.

Almost surely, 2^859839122 is an apocalyptic number.

859839122 is a deficient number, since it is larger than the sum of its proper divisors (429919564).

859839122 is a wasteful number, since it uses less digits than its factorization.

859839122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429919563.

The product of its digits is 311040, while the sum is 47.

The square root of 859839122 is about 29323.0135218057. The cubic root of 859839122 is about 950.9092391904.

The spelling of 859839122 in words is "eight hundred fifty-nine million, eight hundred thirty-nine thousand, one hundred twenty-two".