397865412 has 96 divisors (see below), whose sum is σ = 1206374400. Its totient is φ = 111023136.

The previous prime is 397865407. The next prime is 397865417. The reversal of 397865412 is 214568793.

397865412 is a `hidden beast` number, since 39 + 78 + 6 + 541 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (397865407) and next prime (397865417).

It is not an unprimeable number, because it can be changed into a prime (397865417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26389 + ... + 38627.

It is an arithmetic number, because the mean of its divisors is an integer number (12566400).

Almost surely, 2^397865412 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 397865412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (603187200).

397865412 is an abundant number, since it is smaller than the sum of its proper divisors (808508988).

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

397865412 is a wasteful number, since it uses less digits than its factorization.

397865412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12302 (or 12294 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 397865412 is about 19946.5639146195. The cubic root of 397865412 is about 735.4933131417.

The spelling of 397865412 in words is "three hundred ninety-seven million, eight hundred sixty-five thousand, four hundred twelve".