403406 has 8 divisors (see below), whose sum is σ = 607824. Its totient is φ = 200800.

The previous prime is 403391. The next prime is 403433. The reversal of 403406 is 604304.

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

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 403406.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 551 + ... + 1053.

It is an arithmetic number, because the mean of its divisors is an integer number (75978).

2⁴⁰³⁴⁰⁶ is an apocalyptic number.

403406 is a deficient number, since it is larger than the sum of its proper divisors (204418).

403406 is a wasteful number, since it uses less digits than its factorization.

403406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 403406 is about 635.1425036950. The cubic root of 403406 is about 73.8891693718.

The spelling of 403406 in words is "four hundred three thousand, four hundred six".