399106 has 8 divisors (see below), whose sum is σ = 601344. Its totient is φ = 198660.

The previous prime is 399101. The next prime is 399107. The reversal of 399106 is 601993.

It is a happy number.

399106 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 (399101) 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 3 ways as a sum of consecutive naturals, for example, 631 + ... + 1093.

It is an arithmetic number, because the mean of its divisors is an integer number (75168).

2³⁹⁹¹⁰⁶ is an apocalyptic number.

399106 is a deficient number, since it is larger than the sum of its proper divisors (202238).

399106 is a wasteful number, since it uses less digits than its factorization.

399106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 399106 is about 631.7483676275. The cubic root of 399106 is about 73.6256969580.

It can be divided in two parts, 399 and 106, that added together give a palindrome (505).

The spelling of 399106 in words is "three hundred ninety-nine thousand, one hundred six".