1384821 has 12 divisors (see below), whose sum is σ = 2015520. Its totient is φ = 916200.

The previous prime is 1384813. The next prime is 1384829. The reversal of 1384821 is 1284831.

It is an interprime number because it is at equal distance from previous prime (1384813) and next prime (1384829).

It is not a de Polignac number, because 1384821 - 2³ = 1384813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1384829) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 850 + ... + 1868.

It is an arithmetic number, because the mean of its divisors is an integer number (167960).

2^1384821 is an apocalyptic number.

It is an amenable number.

1384821 is a deficient number, since it is larger than the sum of its proper divisors (630699).

1384821 is a wasteful number, since it uses less digits than its factorization.

1384821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1176 (or 1173 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 1384821 is about 1176.7841773239. The cubic root of 1384821 is about 111.4631246744.

The spelling of 1384821 in words is "one million, three hundred eighty-four thousand, eight hundred twenty-one".