1284406 has 8 divisors (see below), whose sum is σ = 1939824. Its totient is φ = 637800.

The previous prime is 1284383. The next prime is 1284421. The reversal of 1284406 is 6044821.

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

It is a plaindrome in base 9.

It is a congruent number.

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, 1825 + ... + 2428.

It is an arithmetic number, because the mean of its divisors is an integer number (242478).

2^1284406 is an apocalyptic number.

1284406 is a deficient number, since it is larger than the sum of its proper divisors (655418).

1284406 is a wasteful number, since it uses less digits than its factorization.

1284406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4406.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 1284406 is about 1133.3163724221. The cubic root of 1284406 is about 108.7011424520.

The spelling of 1284406 in words is "one million, two hundred eighty-four thousand, four hundred six".