1388895 has 8 divisors (see below), whose sum is σ = 2222256. Its totient is φ = 740736.

The previous prime is 1388887. The next prime is 1388927. The reversal of 1388895 is 5988831.

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

It is not a de Polignac number, because 1388895 - 2³ = 1388887 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46282 + ... + 46311.

It is an arithmetic number, because the mean of its divisors is an integer number (277782).

2^1388895 is an apocalyptic number.

1388895 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1388895 is a deficient number, since it is larger than the sum of its proper divisors (833361).

1388895 is an equidigital number, since it uses as much as digits as its factorization.

1388895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92601.

The product of its digits is 69120, while the sum is 42.

The square root of 1388895 is about 1178.5138946996. The cubic root of 1388895 is about 111.5723219860.

The spelling of 1388895 in words is "one million, three hundred eighty-eight thousand, eight hundred ninety-five".