393436 has 12 divisors (see below), whose sum is σ = 705600. Its totient is φ = 191840.

The previous prime is 393413. The next prime is 393451. The reversal of 393436 is 634393.

It is a congruent number.

It is an unprimeable number.

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, 1036 + ... + 1363.

It is an arithmetic number, because the mean of its divisors is an integer number (58800).

2³⁹³⁴³⁶ is an apocalyptic number.

It is an amenable number.

393436 is a deficient number, since it is larger than the sum of its proper divisors (312164).

393436 is a wasteful number, since it uses less digits than its factorization.

393436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2444 (or 2442 counting only the distinct ones).

The product of its digits is 5832, while the sum is 28.

The square root of 393436 is about 627.2447688104. The cubic root of 393436 is about 73.2753720150.

It can be divided in two parts, 3 and 93436, that added together give a palindrome (93439).

The spelling of 393436 in words is "three hundred ninety-three thousand, four hundred thirty-six".