1383885 has 48 divisors (see below), whose sum is σ = 2673216. Its totient is φ = 684288.

The previous prime is 1383881. The next prime is 1383901. The reversal of 1383885 is 5883831.

It is a happy number.

It is not a de Polignac number, because 1383885 - 2² = 1383881 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1383881) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20622 + ... + 20688.

It is an arithmetic number, because the mean of its divisors is an integer number (55692).

2^1383885 is an apocalyptic number.

1383885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1383885 is a deficient number, since it is larger than the sum of its proper divisors (1289331).

1383885 is an equidigital number, since it uses as much as digits as its factorization.

1383885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 92 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 1383885 is about 1176.3864161065. The cubic root of 1383885 is about 111.4380063862.

It can be divided in two parts, 138 and 3885, that multiplied together give a triangular number (536130 = T₁₀₃₅).

The spelling of 1383885 in words is "one million, three hundred eighty-three thousand, eight hundred eighty-five".