397853441220 has 288 divisors, whose sum is σ = 1182266305920. Its totient is φ = 99838771200.

The previous prime is 397853441203. The next prime is 397853441281. The reversal of 397853441220 is 22144358793.

397853441220 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 397853441220.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 992153020 + ... + 992153420.

It is an arithmetic number, because the mean of its divisors is an integer number (4105091340).

Almost surely, 2^397853441220 is an apocalyptic number.

397853441220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397853441220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (591133152960).

397853441220 is an abundant number, since it is smaller than the sum of its proper divisors (784412864700).

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

397853441220 is a wasteful number, since it uses less digits than its factorization.

397853441220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695 (or 620 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 397853441220 in words is "three hundred ninety-seven billion, eight hundred fifty-three million, four hundred forty-one thousand, two hundred twenty".