1388834 has 8 divisors (see below), whose sum is σ = 2134188. Its totient is φ = 677440.

The previous prime is 1388819. The next prime is 1388837. The reversal of 1388834 is 4388831.

It can be written as a sum of positive squares in 2 ways, for example, as 1216609 + 172225 = 1103^2 + 415^2 .

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1388794 and 1388803.

It is not an unprimeable number, because it can be changed into a prime (1388837) 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, 8387 + ... + 8550.

2^1388834 is an apocalyptic number.

1388834 is a deficient number, since it is larger than the sum of its proper divisors (745354).

1388834 is a wasteful number, since it uses less digits than its factorization.

1388834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16980.

The product of its digits is 18432, while the sum is 35.

The square root of 1388834 is about 1178.4880143642. The cubic root of 1388834 is about 111.5706885504.

It can be divided in two parts, 1388 and 834, that added together give a palindrome (2222).

The spelling of 1388834 in words is "one million, three hundred eighty-eight thousand, eight hundred thirty-four".