399486 has 16 divisors (see below), whose sum is σ = 806400. Its totient is φ = 131928.

The previous prime is 399481. The next prime is 399491. The reversal of 399486 is 684993.

It is an interprime number because it is at equal distance from previous prime (399481) and next prime (399491).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 595 + ... + 1073.

It is an arithmetic number, because the mean of its divisors is an integer number (50400).

2³⁹⁹⁴⁸⁶ is an apocalyptic number.

399486 is an abundant number, since it is smaller than the sum of its proper divisors (406914).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399486 is a wasteful number, since it uses less digits than its factorization.

399486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623.

The product of its digits is 46656, while the sum is 39.

The square root of 399486 is about 632.0490487296. The cubic root of 399486 is about 73.6490565752.

The spelling of 399486 in words is "three hundred ninety-nine thousand, four hundred eighty-six".