1388653 has 16 divisors (see below), whose sum is σ = 1710720. Its totient is φ = 1100736.

The previous prime is 1388641. The next prime is 1388659. The reversal of 1388653 is 3568831.

It is a happy number.

It is not a de Polignac number, because 1388653 - 2⁹ = 1388141 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 (1388659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6951 + ... + 7147.

It is an arithmetic number, because the mean of its divisors is an integer number (106920).

2^1388653 is an apocalyptic number.

It is an amenable number.

1388653 is a deficient number, since it is larger than the sum of its proper divisors (322067).

1388653 is a wasteful number, since it uses less digits than its factorization.

1388653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276.

The product of its digits is 17280, while the sum is 34.

The square root of 1388653 is about 1178.4112185481. The cubic root of 1388653 is about 111.5658415176.

The spelling of 1388653 in words is "one million, three hundred eighty-eight thousand, six hundred fifty-three".