1404990 has 48 divisors (see below), whose sum is σ = 3723408. Its totient is φ = 367488.

The previous prime is 1404989. The next prime is 1405007. The reversal of 1404990 is 994041.

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 23 ways as a sum of consecutive naturals, for example, 5914 + ... + 6146.

It is an arithmetic number, because the mean of its divisors is an integer number (77571).

2^1404990 is an apocalyptic number.

1404990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1404990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1861704).

1404990 is an abundant number, since it is smaller than the sum of its proper divisors (2318418).

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

1404990 is a wasteful number, since it uses less digits than its factorization.

1404990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 1404990 is about 1185.3227408601. The cubic root of 1404990 is about 112.0016475098.

The spelling of 1404990 in words is "one million, four hundred four thousand, nine hundred ninety".