397874 has 4 divisors (see below), whose sum is σ = 596814. Its totient is φ = 198936.

The previous prime is 397867. The next prime is 397897. The reversal of 397874 is 478793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 478793 = 7 ⋅68399.

It can be written as a sum of positive squares in only one way, i.e., 351649 + 46225 = 593^2 + 215^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 397874.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 99467 + ... + 99470.

2³⁹⁷⁸⁷⁴ is an apocalyptic number.

397874 is a deficient number, since it is larger than the sum of its proper divisors (198940).

397874 is a wasteful number, since it uses less digits than its factorization.

397874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198939.

The product of its digits is 42336, while the sum is 38.

The square root of 397874 is about 630.7725422052. The cubic root of 397874 is about 73.5498605024.

The spelling of 397874 in words is "three hundred ninety-seven thousand, eight hundred seventy-four".