393429 has 4 divisors (see below), whose sum is σ = 524576. Its totient is φ = 262284.

The previous prime is 393413. The next prime is 393451. The reversal of 393429 is 924393.

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 not a de Polignac number, because 393429 - 2⁴ = 393413 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 393396 and 393405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393479) 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, 65569 + ... + 65574.

It is an arithmetic number, because the mean of its divisors is an integer number (131144).

2³⁹³⁴²⁹ is an apocalyptic number.

It is an amenable number.

393429 is a deficient number, since it is larger than the sum of its proper divisors (131147).

393429 is a wasteful number, since it uses less digits than its factorization.

393429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131146.

The product of its digits is 5832, while the sum is 30.

The square root of 393429 is about 627.2391888267. The cubic root of 393429 is about 73.2749374415.

The spelling of 393429 in words is "three hundred ninety-three thousand, four hundred twenty-nine".