397888 has 14 divisors (see below), whose sum is σ = 789686. Its totient is φ = 198912.

The previous prime is 397867. The next prime is 397897. The reversal of 397888 is 888793.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 369664 + 28224 = 608^2 + 168^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3045 + ... + 3172.

2³⁹⁷⁸⁸⁸ is an apocalyptic number.

It is an amenable number.

397888 is a deficient number, since it is larger than the sum of its proper divisors (391798).

397888 is an equidigital number, since it uses as much as digits as its factorization.

397888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6229 (or 6219 counting only the distinct ones).

The product of its digits is 96768, while the sum is 43.

The square root of 397888 is about 630.7836396103. The cubic root of 397888 is about 73.5507231591.

The spelling of 397888 in words is "three hundred ninety-seven thousand, eight hundred eighty-eight".