399676 has 12 divisors (see below), whose sum is σ = 704872. Its totient is φ = 198288.

The previous prime is 399667. The next prime is 399677. The reversal of 399676 is 676993.

It is a d-powerful number, because it can be written as 3 + 9⁵ + 6⁴ + 9⁵ + 7³ + 6⁷ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399677) by changing a digit.

399676 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346 + ... + 958.

2³⁹⁹⁶⁷⁶ is an apocalyptic number.

It is an amenable number.

399676 is a deficient number, since it is larger than the sum of its proper divisors (305196).

399676 is a wasteful number, since it uses less digits than its factorization.

399676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780 (or 778 counting only the distinct ones).

The product of its digits is 61236, while the sum is 40.

The square root of 399676 is about 632.1993356529. The cubic root of 399676 is about 73.6607308290.

The spelling of 399676 in words is "three hundred ninety-nine thousand, six hundred seventy-six".