1388171 has 2 divisors, whose sum is σ = 1388172. Its totient is φ = 1388170.

The previous prime is 1388161. The next prime is 1388183. The reversal of 1388171 is 1718831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1388171 - 2¹⁰ = 1387147 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1388141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 694085 + 694086.

It is an arithmetic number, because the mean of its divisors is an integer number (694086).

2^1388171 is an apocalyptic number.

1388171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1388171 is an equidigital number, since it uses as much as digits as its factorization.

1388171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 29.

The square root of 1388171 is about 1178.2066881494. The cubic root of 1388171 is about 111.5529318950.

The spelling of 1388171 in words is "one million, three hundred eighty-eight thousand, one hundred seventy-one".