855477956 has 24 divisors (see below), whose sum is σ = 1539643896. Its totient is φ = 415662080.

The previous prime is 855477949. The next prime is 855477971. The reversal of 855477956 is 659774558.

It can be written as a sum of positive squares in 4 ways, for example, as 148449856 + 707028100 = 12184^2 + 26590^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32000 + ... + 52296.

It is an arithmetic number, because the mean of its divisors is an integer number (64151829).

Almost surely, 2^855477956 is an apocalyptic number.

It is an amenable number.

855477956 is a deficient number, since it is larger than the sum of its proper divisors (684165940).

855477956 is a wasteful number, since it uses less digits than its factorization.

855477956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20599 (or 20597 counting only the distinct ones).

The product of its digits is 10584000, while the sum is 56.

The square root of 855477956 is about 29248.5547677146. The cubic root of 855477956 is about 949.2988199936.

The spelling of 855477956 in words is "eight hundred fifty-five million, four hundred seventy-seven thousand, nine hundred fifty-six".