397894 has 16 divisors (see below), whose sum is σ = 691488. Its totient is φ = 168192.

The previous prime is 397867. The next prime is 397897. The reversal of 397894 is 498793.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1212 + ... + 1504.

It is an arithmetic number, because the mean of its divisors is an integer number (43218).

397894 is a Friedman number, since it can be written as 97*(9+8^4-3), using all its digits and the basic arithmetic operations.

2³⁹⁷⁸⁹⁴ is an apocalyptic number.

397894 is a deficient number, since it is larger than the sum of its proper divisors (293594).

397894 is a wasteful number, since it uses less digits than its factorization.

397894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399.

The product of its digits is 54432, while the sum is 40.

The square root of 397894 is about 630.7883955813. The cubic root of 397894 is about 73.5510928629.

It can be divided in two parts, 39789 and 4, that added together give a palindrome (39793).

The spelling of 397894 in words is "three hundred ninety-seven thousand, eight hundred ninety-four".