1378443 has 8 divisors (see below), whose sum is σ = 2005056. Its totient is φ = 835400.

The previous prime is 1378441. The next prime is 1378499. The reversal of 1378443 is 3448731.

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 1378443 - 2¹ = 1378441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1378443.

It is not an unprimeable number, because it can be changed into a prime (1378441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20853 + ... + 20918.

It is an arithmetic number, because the mean of its divisors is an integer number (250632).

2^1378443 is an apocalyptic number.

1378443 is a deficient number, since it is larger than the sum of its proper divisors (626613).

1378443 is a wasteful number, since it uses less digits than its factorization.

1378443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41785.

The product of its digits is 8064, while the sum is 30.

The square root of 1378443 is about 1174.0711222068. The cubic root of 1378443 is about 111.2917412697.

The spelling of 1378443 in words is "one million, three hundred seventy-eight thousand, four hundred forty-three".