397201812 has 96 divisors (see below), whose sum is σ = 1119025152. Its totient is φ = 107200896.

The previous prime is 397201807. The next prime is 397201817. The reversal of 397201812 is 218102793.

It is an interprime number because it is at equal distance from previous prime (397201807) and next prime (397201817).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397201817) 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, 159118 + ... + 161594.

It is an arithmetic number, because the mean of its divisors is an integer number (11656512).

Almost surely, 2^397201812 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 397201812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (559512576).

397201812 is an abundant number, since it is smaller than the sum of its proper divisors (721823340).

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

397201812 is a wasteful number, since it uses less digits than its factorization.

397201812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2597 (or 2595 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 397201812 is about 19929.9225287004. The cubic root of 397201812 is about 735.0841756526.

The spelling of 397201812 in words is "three hundred ninety-seven million, two hundred one thousand, eight hundred twelve".