4397856 has 48 divisors (see below), whose sum is σ = 11749248. Its totient is φ = 1440000.

The previous prime is 4397831. The next prime is 4397863. The reversal of 4397856 is 6587934.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×4397856² = 38682274793472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5481 + ... + 6231.

It is an arithmetic number, because the mean of its divisors is an integer number (244776).

Almost surely, 2^4397856 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 4397856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5874624).

4397856 is an abundant number, since it is smaller than the sum of its proper divisors (7351392).

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

4397856 is a wasteful number, since it uses less digits than its factorization.

4397856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825 (or 817 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The square root of 4397856 is about 2097.1065781214. The cubic root of 4397856 is about 163.8376342686.

It can be divided in two parts, 4397 and 856, that added together give a triangular number (5253 = T₁₀₂).

The spelling of 4397856 in words is "four million, three hundred ninety-seven thousand, eight hundred fifty-six".