855870838 has 4 divisors (see below), whose sum is σ = 1283806260. Its totient is φ = 427935418.

The previous prime is 855870817. The next prime is 855870853. The reversal of 855870838 is 838078558.

855870838 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 838078558 = 2 ⋅419039279.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213967708 + ... + 213967711.

It is an arithmetic number, because the mean of its divisors is an integer number (320951565).

Almost surely, 2^855870838 is an apocalyptic number.

855870838 is a deficient number, since it is larger than the sum of its proper divisors (427935422).

855870838 is a wasteful number, since it uses less digits than its factorization.

855870838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427935421.

The product of its (nonzero) digits is 2150400, while the sum is 52.

The square root of 855870838 is about 29255.2702602454. The cubic root of 855870838 is about 949.4441209668. Note that the first 3 decimals are identical.

The spelling of 855870838 in words is "eight hundred fifty-five million, eight hundred seventy thousand, eight hundred thirty-eight".