397860 has 48 divisors (see below), whose sum is σ = 1176000. Its totient is φ = 100224.

The previous prime is 397849. The next prime is 397867. The reversal of 397860 is 68793.

It is a happy number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 397860.

It is not an unprimeable number, because it can be changed into a prime (397867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 966 + ... + 1314.

It is an arithmetic number, because the mean of its divisors is an integer number (24500).

2³⁹⁷⁸⁶⁰ is an apocalyptic number.

397860 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 397860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (588000).

397860 is an abundant number, since it is smaller than the sum of its proper divisors (778140).

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

397860 is a wasteful number, since it uses less digits than its factorization.

397860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380 (or 378 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 397860 is about 630.7614446049. The cubic root of 397860 is about 73.5489978255.

The spelling of 397860 in words is "three hundred ninety-seven thousand, eight hundred sixty".