397760 has 56 divisors (see below), whose sum is σ = 1042416. Its totient is φ = 143360.

The previous prime is 397759. The next prime is 397763. The reversal of 397760 is 67793.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a nialpdrome in base 9.

It is a zygodrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3464 + ... + 3576.

2³⁹⁷⁷⁶⁰ 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 397760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (521208).

397760 is an abundant number, since it is smaller than the sum of its proper divisors (644656).

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

397760 is a wasteful number, since it uses less digits than its factorization.

397760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 7938, while the sum is 32.

The square root of 397760 is about 630.6821703521. The cubic root of 397760 is about 73.5428352591.

The spelling of 397760 in words is "three hundred ninety-seven thousand, seven hundred sixty".