397790016 has 224 divisors, whose sum is σ = 1204374528. Its totient is φ = 115015680.

The previous prime is 397790011. The next prime is 397790027. The reversal of 397790016 is 610097793.

It is a self number, because there is not a number n which added to its sum of digits gives 397790016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397790011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4100880 + ... + 4100976.

It is an arithmetic number, because the mean of its divisors is an integer number (5376672).

Almost surely, 2^397790016 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 397790016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (602187264).

397790016 is an abundant number, since it is smaller than the sum of its proper divisors (806584512).

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

397790016 is a wasteful number, since it uses less digits than its factorization.

397790016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 71442, while the sum is 42.

The square root of 397790016 is about 19944.6738754987. The cubic root of 397790016 is about 735.4468512349.

The spelling of 397790016 in words is "three hundred ninety-seven million, seven hundred ninety thousand, sixteen".