855785834 has 4 divisors (see below), whose sum is σ = 1283678754. Its totient is φ = 427892916.

The previous prime is 855785813. The next prime is 855785837. The reversal of 855785834 is 438587558.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 438587558 = 2 ⋅219293779.

It can be written as a sum of positive squares in only one way, i.e., 847101025 + 8684809 = 29105^2 + 2947^2 .

It is not an unprimeable number, because it can be changed into a prime (855785837) 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, 213946457 + ... + 213946460.

Almost surely, 2^855785834 is an apocalyptic number.

855785834 is a deficient number, since it is larger than the sum of its proper divisors (427892920).

855785834 is a wasteful number, since it uses less digits than its factorization.

855785834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427892919.

The product of its digits is 5376000, while the sum is 53.

The square root of 855785834 is about 29253.8174261070. The cubic root of 855785834 is about 949.4126873997.

The spelling of 855785834 in words is "eight hundred fifty-five million, seven hundred eighty-five thousand, eight hundred thirty-four".