397720848 has 240 divisors, whose sum is σ = 1312951680. Its totient is φ = 103262208.

The previous prime is 397720781. The next prime is 397720849. The reversal of 397720848 is 848027793.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 397720797 and 397720806.

It is not an unprimeable number, because it can be changed into a prime (397720849) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13714498 + ... + 13714526.

It is an arithmetic number, because the mean of its divisors is an integer number (5470632).

Almost surely, 2^397720848 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 397720848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (656475840).

397720848 is an abundant number, since it is smaller than the sum of its proper divisors (915230832).

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

397720848 is an equidigital number, since it uses as much as digits as its factorization.

397720848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 48.

The square root of 397720848 is about 19942.9398033490. The cubic root of 397720848 is about 735.4042220969.

The spelling of 397720848 in words is "three hundred ninety-seven million, seven hundred twenty thousand, eight hundred forty-eight".