1383804 has 30 divisors (see below), whose sum is σ = 3618384. Its totient is φ = 461160.

The previous prime is 1383803. The next prime is 1383829. The reversal of 1383804 is 4083831.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1383803) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1812 + ... + 2459.

2^1383804 is an apocalyptic number.

It is an amenable number.

1383804 is an abundant number, since it is smaller than the sum of its proper divisors (2234580).

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

1383804 is a wasteful number, since it uses less digits than its factorization.

1383804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4287 (or 4276 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1383804 is about 1176.3519881396. The cubic root of 1383804 is about 111.4358321558.

Adding to 1383804 its sum of digits (27), we get a palindrome (1383831).

It can be divided in two parts, 138380 and 4, that added together give a square (138384 = 372²).

The spelling of 1383804 in words is "one million, three hundred eighty-three thousand, eight hundred four".