1388017 has 4 divisors (see below), whose sum is σ = 1414260. Its totient is φ = 1361776.

The previous prime is 1388011. The next prime is 1388021. The reversal of 1388017 is 7108831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7108831 = 19 ⋅374149.

It can be written as a sum of positive squares in 2 ways, for example, as 1073296 + 314721 = 1036^2 + 561^2 .

It is a cyclic number.

It is not a de Polignac number, because 1388017 - 2¹⁹ = 863729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1388011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13042 + ... + 13147.

It is an arithmetic number, because the mean of its divisors is an integer number (353565).

2^1388017 is an apocalyptic number.

It is an amenable number.

1388017 is a deficient number, since it is larger than the sum of its proper divisors (26243).

1388017 is an equidigital number, since it uses as much as digits as its factorization.

1388017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26242.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 1388017 is about 1178.1413327780. The cubic root of 1388017 is about 111.5488066139.

The spelling of 1388017 in words is "one million, three hundred eighty-eight thousand, seventeen".