1388799 has 8 divisors (see below), whose sum is σ = 2057520. Its totient is φ = 925848.

The previous prime is 1388797. The next prime is 1388819. The reversal of 1388799 is 9978831.

It is not a de Polignac number, because 1388799 - 2¹ = 1388797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1388791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25692 + ... + 25745.

It is an arithmetic number, because the mean of its divisors is an integer number (257190).

2^1388799 is an apocalyptic number.

1388799 is a deficient number, since it is larger than the sum of its proper divisors (668721).

1388799 is an equidigital number, since it uses as much as digits as its factorization.

1388799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51446 (or 51440 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 1388799 is about 1178.4731647348. The cubic root of 1388799 is about 111.5697513117.

It can be divided in two parts, 1388 and 799, that added together give a 7-th power (2187 = 3⁷).

The spelling of 1388799 in words is "one million, three hundred eighty-eight thousand, seven hundred ninety-nine".