399886 has 8 divisors (see below), whose sum is σ = 603720. Its totient is φ = 198648.

The previous prime is 399871. The next prime is 399887. The reversal of 399886 is 688993.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399887) by changing a digit.

399886 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201 + ... + 916.

It is an arithmetic number, because the mean of its divisors is an integer number (75465).

2³⁹⁹⁸⁸⁶ is an apocalyptic number.

399886 is a deficient number, since it is larger than the sum of its proper divisors (203834).

399886 is a wasteful number, since it uses less digits than its factorization.

399886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298.

The product of its digits is 93312, while the sum is 43.

The square root of 399886 is about 632.3654006980. The cubic root of 399886 is about 73.6736296479.

The spelling of 399886 in words is "three hundred ninety-nine thousand, eight hundred eighty-six".