393693 has 4 divisors (see below), whose sum is σ = 524928. Its totient is φ = 262460.

The previous prime is 393683. The next prime is 393697. The reversal of 393693 is 396393.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 393693 - 2⁴ = 393677 is a prime.

It is a D-number.

393693 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65613 + ... + 65618.

It is an arithmetic number, because the mean of its divisors is an integer number (131232).

2³⁹³⁶⁹³ is an apocalyptic number.

It is an amenable number.

393693 is a deficient number, since it is larger than the sum of its proper divisors (131235).

393693 is a wasteful number, since it uses less digits than its factorization.

393693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131234.

The product of its digits is 13122, while the sum is 33.

The square root of 393693 is about 627.4495995696. The cubic root of 393693 is about 73.2913235054.

The spelling of 393693 in words is "three hundred ninety-three thousand, six hundred ninety-three".