1406404 has 12 divisors (see below), whose sum is σ = 2568384. Its totient is φ = 672584.

The previous prime is 1406389. The next prime is 1406417. The reversal of 1406404 is 4046041.

It is a super-2 number, since 2×1406404² = 3955944422432, which contains 22 as substring.

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, 7552 + ... + 7735.

It is an arithmetic number, because the mean of its divisors is an integer number (214032).

2^1406404 is an apocalyptic number.

It is an amenable number.

1406404 is a deficient number, since it is larger than the sum of its proper divisors (1161980).

1406404 is a wasteful number, since it uses less digits than its factorization.

1406404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15314 (or 15312 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1406404 is about 1185.9190528868. The cubic root of 1406404 is about 112.0392082114.

The spelling of 1406404 in words is "one million, four hundred six thousand, four hundred four".