1383904 has 24 divisors (see below), whose sum is σ = 2774520. Its totient is φ = 679296.

The previous prime is 1383901. The next prime is 1383913. The reversal of 1383904 is 4093831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1383901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1522 + ... + 2254.

It is an arithmetic number, because the mean of its divisors is an integer number (115605).

2^1383904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1383904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1387260).

1383904 is an abundant number, since it is smaller than the sum of its proper divisors (1390616).

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

1383904 is an equidigital number, since it uses as much as digits as its factorization.

1383904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802 (or 794 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 1383904 is about 1176.3944916566. The cubic root of 1383904 is about 111.4385163786.

The spelling of 1383904 in words is "one million, three hundred eighty-three thousand, nine hundred four".