397895 has 4 divisors (see below), whose sum is σ = 477480. Its totient is φ = 318312.

The previous prime is 397867. The next prime is 397897. The reversal of 397895 is 598793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 598793 = 13 ⋅46061.

It is a cyclic number.

It is not a de Polignac number, because 397895 - 2¹⁰ = 396871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39785 + ... + 39794.

It is an arithmetic number, because the mean of its divisors is an integer number (119370).

2³⁹⁷⁸⁹⁵ is an apocalyptic number.

397895 is a deficient number, since it is larger than the sum of its proper divisors (79585).

397895 is an equidigital number, since it uses as much as digits as its factorization.

397895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79584.

The product of its digits is 68040, while the sum is 41.

The square root of 397895 is about 630.7891882396. The cubic root of 397895 is about 73.5511544798.

The spelling of 397895 in words is "three hundred ninety-seven thousand, eight hundred ninety-five".