1388847 has 8 divisors (see below), whose sum is σ = 1859760. Its totient is φ = 921920.

The previous prime is 1388837. The next prime is 1388873. The reversal of 1388847 is 7488831.

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

It is a cyclic number.

It is not a de Polignac number, because 1388847 - 2⁷ = 1388719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1388837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54 + ... + 1667.

It is an arithmetic number, because the mean of its divisors is an integer number (232470).

2^1388847 is an apocalyptic number.

1388847 is a deficient number, since it is larger than the sum of its proper divisors (470913).

1388847 is a wasteful number, since it uses less digits than its factorization.

1388847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1993.

The product of its digits is 43008, while the sum is 39.

The square root of 1388847 is about 1178.4935298931. The cubic root of 1388847 is about 111.5710366637.

The spelling of 1388847 in words is "one million, three hundred eighty-eight thousand, eight hundred forty-seven".