4397820 has 96 divisors (see below), whose sum is σ = 14504448. Its totient is φ = 974592.

The previous prime is 4397803. The next prime is 4397831. The reversal of 4397820 is 287934.

4397820 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

4397820 is strictly pandigital in base 8.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15399 + ... + 15681.

It is an arithmetic number, because the mean of its divisors is an integer number (151088).

Almost surely, 2^4397820 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 4397820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7252224).

4397820 is an abundant number, since it is smaller than the sum of its proper divisors (10106628).

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

4397820 is a wasteful number, since it uses less digits than its factorization.

4397820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339 (or 337 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 4397820 is about 2097.0979948491. The cubic root of 4397820 is about 163.8371872197.

The spelling of 4397820 in words is "four million, three hundred ninety-seven thousand, eight hundred twenty".