1404040 has 32 divisors (see below), whose sum is σ = 3447360. Its totient is φ = 510400.

The previous prime is 1403981. The next prime is 1404059. The reversal of 1404040 is 404041.

1404040 = T₈₉ + T₉₀ + ... + T₂₀₈.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1404040.

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, 1156 + ... + 2035.

It is an arithmetic number, because the mean of its divisors is an integer number (107730).

2^1404040 is an apocalyptic number.

1404040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1404040 is an abundant number, since it is smaller than the sum of its proper divisors (2043320).

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

1404040 is a wasteful number, since it uses less digits than its factorization.

1404040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3213 (or 3209 counting only the distinct ones).

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

The square root of 1404040 is about 1184.9219383571. The cubic root of 1404040 is about 111.9763980879.

Adding to 1404040 its reverse (404041), we get a palindrome (1808081).

Subtracting from 1404040 its reverse (404041), we obtain a palindrome (999999).

The spelling of 1404040 in words is "one million, four hundred four thousand, forty".