397837 has 8 divisors (see below), whose sum is σ = 442080. Its totient is φ = 354960.

The previous prime is 397829. The next prime is 397849. The reversal of 397837 is 738793.

It is the 258-th star number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 397837 - 2³ = 397829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 397796 and 397805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397807) 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, 343 + ... + 955.

It is an arithmetic number, because the mean of its divisors is an integer number (55260).

2³⁹⁷⁸³⁷ is an apocalyptic number.

It is an amenable number.

397837 is a deficient number, since it is larger than the sum of its proper divisors (44243).

397837 is a wasteful number, since it uses less digits than its factorization.

397837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683.

The product of its digits is 31752, while the sum is 37.

The square root of 397837 is about 630.7432124090. The cubic root of 397837 is about 73.5475805267.

The spelling of 397837 in words is "three hundred ninety-seven thousand, eight hundred thirty-seven".