1404406 has 4 divisors (see below), whose sum is σ = 2106612. Its totient is φ = 702202.

The previous prime is 1404397. The next prime is 1404419. The reversal of 1404406 is 6044041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6044041 = 1277 ⋅4733.

It is a plaindrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 351100 + ... + 351103.

It is an arithmetic number, because the mean of its divisors is an integer number (526653).

2^1404406 is an apocalyptic number.

1404406 is a deficient number, since it is larger than the sum of its proper divisors (702206).

1404406 is an equidigital number, since it uses as much as digits as its factorization.

1404406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702205.

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

The square root of 1404406 is about 1185.0763688472. The cubic root of 1404406 is about 111.9861271082.

Adding to 1404406 its reverse (6044041), we get a palindrome (7448447).

The spelling of 1404406 in words is "one million, four hundred four thousand, four hundred six".