390693 has 8 divisors (see below), whose sum is σ = 537856. Its totient is φ = 252000.

The previous prime is 390673. The next prime is 390703. The reversal of 390693 is 396093.

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

It is not a de Polignac number, because 390693 - 2⁸ = 390437 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 390693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2008 + ... + 2193.

It is an arithmetic number, because the mean of its divisors is an integer number (67232).

2³⁹⁰⁶⁹³ is an apocalyptic number.

It is an amenable number.

390693 is a deficient number, since it is larger than the sum of its proper divisors (147163).

390693 is a wasteful number, since it uses less digits than its factorization.

390693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4235.

The product of its (nonzero) digits is 4374, while the sum is 30.

The square root of 390693 is about 625.0543976327. The cubic root of 390693 is about 73.1046849843.

The spelling of 390693 in words is "three hundred ninety thousand, six hundred ninety-three".