1388944 has 20 divisors (see below), whose sum is σ = 2749824. Its totient is φ = 679328.

The previous prime is 1388941. The next prime is 1388953. The reversal of 1388944 is 4498831.

It is not an unprimeable number, because it can be changed into a prime (1388941) 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, 172 + ... + 1675.

2^1388944 is an apocalyptic number.

It is an amenable number.

1388944 is a deficient number, since it is larger than the sum of its proper divisors (1360880).

1388944 is a wasteful number, since it uses less digits than its factorization.

1388944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1902 (or 1896 counting only the distinct ones).

The product of its digits is 27648, while the sum is 37.

The square root of 1388944 is about 1178.5346834099. The cubic root of 1388944 is about 111.5736340553.

It can be divided in two parts, 13889 and 44, that multiplied together give a palindrome (611116).

The spelling of 1388944 in words is "one million, three hundred eighty-eight thousand, nine hundred forty-four".