393679 has 8 divisors (see below), whose sum is σ = 462672. Its totient is φ = 330240.

The previous prime is 393677. The next prime is 393683. The reversal of 393679 is 976393.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 393679 - 2¹ = 393677 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393671) 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, 1234 + ... + 1519.

It is an arithmetic number, because the mean of its divisors is an integer number (57834).

2³⁹³⁶⁷⁹ is an apocalyptic number.

393679 is a deficient number, since it is larger than the sum of its proper divisors (68993).

393679 is a wasteful number, since it uses less digits than its factorization.

393679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2777.

The product of its digits is 30618, while the sum is 37.

The square root of 393679 is about 627.4384431958. The cubic root of 393679 is about 73.2904547314.

The spelling of 393679 in words is "three hundred ninety-three thousand, six hundred seventy-nine".