1399404 has 24 divisors (see below), whose sum is σ = 3284848. Its totient is φ = 463680.

The previous prime is 1399403. The next prime is 1399417. The reversal of 1399404 is 4049931.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1399403) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3114 + ... + 3534.

2^1399404 is an apocalyptic number.

It is an amenable number.

1399404 is an abundant number, since it is smaller than the sum of its proper divisors (1885444).

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

1399404 is a wasteful number, since it uses less digits than its factorization.

1399404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705 (or 703 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 1399404 is about 1182.9640738416. The cubic root of 1399404 is about 111.8530172261.

The spelling of 1399404 in words is "one million, three hundred ninety-nine thousand, four hundred four".