1389376 has 28 divisors (see below), whose sum is σ = 2921508. Its totient is φ = 653312.

The previous prime is 1389371. The next prime is 1389383. The reversal of 1389376 is 6739831.

It can be written as a sum of positive squares in 2 ways, for example, as 1000000 + 389376 = 1000^2 + 624^2 .

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

Its product of digits (27216) is a multiple of the sum of its prime divisors (1296).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389371) 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, 450 + ... + 1726.

2^1389376 is an apocalyptic number.

1389376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1389376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1460754).

1389376 is an abundant number, since it is smaller than the sum of its proper divisors (1532132).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1389376 is a wasteful number, since it uses less digits than its factorization.

1389376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306 (or 1296 counting only the distinct ones).

The product of its digits is 27216, while the sum is 37.

The square root of 1389376 is about 1178.7179476024. The cubic root of 1389376 is about 111.5852003516.

The spelling of 1389376 in words is "one million, three hundred eighty-nine thousand, three hundred seventy-six".