1388109 has 8 divisors (see below), whose sum is σ = 1874560. Its totient is φ = 913536.

The previous prime is 1388081. The next prime is 1388113. The reversal of 1388109 is 9018831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1388109 - 2⁵ = 1388077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381109) 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 in 7 ways as a sum of consecutive naturals, for example, 2692 + ... + 3165.

It is an arithmetic number, because the mean of its divisors is an integer number (234320).

2^1388109 is an apocalyptic number.

It is an amenable number.

1388109 is a deficient number, since it is larger than the sum of its proper divisors (486451).

1388109 is an equidigital number, since it uses as much as digits as its factorization.

1388109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5939.

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 1388109 is about 1178.1803766826. The cubic root of 1388109 is about 111.5512711042.

The spelling of 1388109 in words is "one million, three hundred eighty-eight thousand, one hundred nine".