399674 has 16 divisors (see below), whose sum is σ = 673056. Its totient is φ = 176400.

The previous prime is 399667. The next prime is 399677. The reversal of 399674 is 476993.

It is a d-powerful number, because it can be written as 3⁹ + 9² + 6² + 9² + 7⁶ + 4⁹ .

It is not an unprimeable number, because it can be changed into a prime (399677) 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, 569 + ... + 1059.

It is an arithmetic number, because the mean of its divisors is an integer number (42066).

2³⁹⁹⁶⁷⁴ is an apocalyptic number.

399674 is a deficient number, since it is larger than the sum of its proper divisors (273382).

399674 is a wasteful number, since it uses less digits than its factorization.

399674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541.

The product of its digits is 40824, while the sum is 38.

The square root of 399674 is about 632.1977538714. The cubic root of 399674 is about 73.6606079614.

The spelling of 399674 in words is "three hundred ninety-nine thousand, six hundred seventy-four".