397859 has 8 divisors (see below), whose sum is σ = 496128. Its totient is φ = 309960.

The previous prime is 397849. The next prime is 397867. The reversal of 397859 is 958793.

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

It is a de Polignac number, because none of the positive numbers 2^k-397859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397829) 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, 2507 + ... + 2660.

It is an arithmetic number, because the mean of its divisors is an integer number (62016).

2³⁹⁷⁸⁵⁹ is an apocalyptic number.

397859 is a deficient number, since it is larger than the sum of its proper divisors (98269).

397859 is a wasteful number, since it uses less digits than its factorization.

397859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5185.

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

The square root of 397859 is about 630.7606519116. The cubic root of 397859 is about 73.5489362050.

The spelling of 397859 in words is "three hundred ninety-seven thousand, eight hundred fifty-nine".