855400448 has 84 divisors (see below), whose sum is σ = 1990927692. Its totient is φ = 366428160.

The previous prime is 855400439. The next prime is 855400487. The reversal of 855400448 is 844004558.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 400343 + ... + 402473.

Almost surely, 2^855400448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 855400448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (995463846).

855400448 is an abundant number, since it is smaller than the sum of its proper divisors (1135527244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

855400448 is an equidigital number, since it uses as much as digits as its factorization.

855400448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2171 (or 2140 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 38.

The square root of 855400448 is about 29247.2297491574. The cubic root of 855400448 is about 949.2701496755.

The spelling of 855400448 in words is "eight hundred fifty-five million, four hundred thousand, four hundred forty-eight".