1380943 has 4 divisors (see below), whose sum is σ = 1441008. Its totient is φ = 1320880.

The previous prime is 1380931. The next prime is 1380947. The reversal of 1380943 is 3490831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1380943 is a prime.

It is a Duffinian number.

1380943 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380947) 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, 29998 + ... + 30043.

It is an arithmetic number, because the mean of its divisors is an integer number (360252).

2^1380943 is an apocalyptic number.

1380943 is a deficient number, since it is larger than the sum of its proper divisors (60065).

1380943 is an equidigital number, since it uses as much as digits as its factorization.

1380943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60064.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 1380943 is about 1175.1353113578. The cubic root of 1380943 is about 111.3589817044.

The spelling of 1380943 in words is "one million, three hundred eighty thousand, nine hundred forty-three".