393387 has 4 divisors (see below), whose sum is σ = 524520. Its totient is φ = 262256.

The previous prime is 393383. The next prime is 393401. The reversal of 393387 is 783393.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 393387 - 2² = 393383 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (393383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65562 + ... + 65567.

It is an arithmetic number, because the mean of its divisors is an integer number (131130).

2³⁹³³⁸⁷ is an apocalyptic number.

393387 is a deficient number, since it is larger than the sum of its proper divisors (131133).

393387 is a wasteful number, since it uses less digits than its factorization.

393387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131132.

The product of its digits is 13608, while the sum is 33.

The square root of 393387 is about 627.2057078822. The cubic root of 393387 is about 73.2723298919.

It can be divided in two parts, 393 and 387, that added together give a triangular number (780 = T₃₉).

The spelling of 393387 in words is "three hundred ninety-three thousand, three hundred eighty-seven".