1404004 has 24 divisors (see below), whose sum is σ = 2878848. Its totient is φ = 586560.

The previous prime is 1403981. The next prime is 1404059. The reversal of 1404004 is 4004041.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 537 + ... + 1759.

It is an arithmetic number, because the mean of its divisors is an integer number (119952).

2^1404004 is an apocalyptic number.

1404004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1404004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1439424).

1404004 is an abundant number, since it is smaller than the sum of its proper divisors (1474844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1404004 is a wasteful number, since it uses less digits than its factorization.

1404004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275 (or 1273 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 1404004 is about 1184.9067473856. The cubic root of 1404004 is about 111.9754410438.

Adding to 1404004 its reverse (4004041), we get a palindrome (5408045).

The spelling of 1404004 in words is "one million, four hundred four thousand, four".