399794 has 16 divisors (see below), whose sum is σ = 636120. Its totient is φ = 188160.

The previous prime is 399793. The next prime is 399851. The reversal of 399794 is 497993.

It can be written as a sum of positive squares in 4 ways, for example, as 113569 + 286225 = 337^2 + 535^2 .

It is not an unprimeable number, because it can be changed into a prime (399793) 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, 3482 + ... + 3594.

2³⁹⁹⁷⁹⁴ is an apocalyptic number.

399794 is a deficient number, since it is larger than the sum of its proper divisors (236326).

399794 is a wasteful number, since it uses less digits than its factorization.

399794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205.

The product of its digits is 61236, while the sum is 41.

The square root of 399794 is about 632.2926537609. The cubic root of 399794 is about 73.6679792927.

The spelling of 399794 in words is "three hundred ninety-nine thousand, seven hundred ninety-four".