855043892 has 6 divisors (see below), whose sum is σ = 1496326818. Its totient is φ = 427521944.

The previous prime is 855043867. The next prime is 855043907. The reversal of 855043892 is 298340558.

It can be written as a sum of positive squares in only one way, i.e., 481626916 + 373416976 = 21946^2 + 19324^2 .

It is a super-2 number, since 2×855043892² = 1462200114493015328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106880483 + ... + 106880490.

It is an arithmetic number, because the mean of its divisors is an integer number (249387803).

Almost surely, 2^855043892 is an apocalyptic number.

It is an amenable number.

855043892 is a deficient number, since it is larger than the sum of its proper divisors (641282926).

855043892 is a wasteful number, since it uses less digits than its factorization.

855043892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213760977 (or 213760975 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 44.

The square root of 855043892 is about 29241.1335621586. The cubic root of 855043892 is about 949.1382367970.

The spelling of 855043892 in words is "eight hundred fifty-five million, forty-three thousand, eight hundred ninety-two".