1388935 has 4 divisors (see below), whose sum is σ = 1666728. Its totient is φ = 1111144.

The previous prime is 1388927. The next prime is 1388941. The reversal of 1388935 is 5398831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5398831 = 19 ⋅284149.

It is a cyclic number.

It is not a de Polignac number, because 1388935 - 2³ = 1388927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1388894 and 1388903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138889 + ... + 138898.

It is an arithmetic number, because the mean of its divisors is an integer number (416682).

2^1388935 is an apocalyptic number.

1388935 is a deficient number, since it is larger than the sum of its proper divisors (277793).

1388935 is an equidigital number, since it uses as much as digits as its factorization.

1388935 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277792.

The product of its digits is 25920, while the sum is 37.

The square root of 1388935 is about 1178.5308651028. The cubic root of 1388935 is about 111.5733930652.

It can be divided in two parts, 13889 and 35, that added together give a square (13924 = 118²).

The spelling of 1388935 in words is "one million, three hundred eighty-eight thousand, nine hundred thirty-five".