397900 has 36 divisors (see below), whose sum is σ = 906192. Its totient is φ = 151360.

The previous prime is 397897. The next prime is 397907. The reversal of 397900 is 9793.

397900 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (397907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2214 + ... + 2386.

It is an arithmetic number, because the mean of its divisors is an integer number (25172).

2³⁹⁷⁹⁰⁰ 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 397900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (453096).

397900 is an abundant number, since it is smaller than the sum of its proper divisors (508292).

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

397900 is a wasteful number, since it uses less digits than its factorization.

397900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210 (or 203 counting only the distinct ones).

The product of its (nonzero) digits is 1701, while the sum is 28.

The square root of 397900 is about 630.7931515164. The cubic root of 397900 is about 73.5514625630.

It can be divided in two parts, 3 and 97900, that added together give a triangular number (97903 = T₄₄₂).

The spelling of 397900 in words is "three hundred ninety-seven thousand, nine hundred".