1388117 has 2 divisors, whose sum is σ = 1388118. Its totient is φ = 1388116.

The previous prime is 1388113. The next prime is 1388141. The reversal of 1388117 is 7118831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1359556 + 28561 = 1166^2 + 169^2 .

It is a cyclic number.

It is not a de Polignac number, because 1388117 - 2² = 1388113 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1388117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1388113) 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, 694058 + 694059.

It is an arithmetic number, because the mean of its divisors is an integer number (694059).

2^1388117 is an apocalyptic number.

It is an amenable number.

1388117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1388117 is an equidigital number, since it uses as much as digits as its factorization.

1388117 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 1388117 is about 1178.1837717436. The cubic root of 1388117 is about 111.5514854026.

The spelling of 1388117 in words is "one million, three hundred eighty-eight thousand, one hundred seventeen".