399134 has 4 divisors (see below), whose sum is σ = 598704. Its totient is φ = 199566.

The previous prime is 399131. The next prime is 399137. The reversal of 399134 is 431993.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (399131) and next prime (399137).

It is a junction number, because it is equal to n+sod(n) for n = 399097 and 399106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99782 + ... + 99785.

It is an arithmetic number, because the mean of its divisors is an integer number (149676).

2³⁹⁹¹³⁴ is an apocalyptic number.

399134 is a deficient number, since it is larger than the sum of its proper divisors (199570).

399134 is a wasteful number, since it uses less digits than its factorization.

399134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199569.

The product of its digits is 2916, while the sum is 29.

The square root of 399134 is about 631.7705279609. The cubic root of 399134 is about 73.6274186989.

The spelling of 399134 in words is "three hundred ninety-nine thousand, one hundred thirty-four".