1384139 has 2 divisors, whose sum is σ = 1384140. Its totient is φ = 1384138.

The previous prime is 1384121. The next prime is 1384171. The reversal of 1384139 is 9314831.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1384139 is a prime.

It is not a weakly prime, because it can be changed into another prime (1384109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 692069 + 692070.

It is an arithmetic number, because the mean of its divisors is an integer number (692070).

2^1384139 is an apocalyptic number.

1384139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1384139 is an equidigital number, since it uses as much as digits as its factorization.

1384139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 29.

The square root of 1384139 is about 1176.4943688773. The cubic root of 1384139 is about 111.4448237933. Note that the first 3 decimals are identical.

The spelling of 1384139 in words is "one million, three hundred eighty-four thousand, one hundred thirty-nine".