1378411 has 4 divisors (see below), whose sum is σ = 1459512. Its totient is φ = 1297312.

The previous prime is 1378397. The next prime is 1378427. The reversal of 1378411 is 1148731.

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

It is a cyclic number.

It is not a de Polignac number, because 1378411 - 2¹³ = 1370219 is a prime.

It is a Duffinian number.

1378411 is a lucky number.

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 3 ways as a sum of consecutive naturals, for example, 40525 + ... + 40558.

It is an arithmetic number, because the mean of its divisors is an integer number (364878).

2^1378411 is an apocalyptic number.

1378411 is a deficient number, since it is larger than the sum of its proper divisors (81101).

1378411 is an equidigital number, since it uses as much as digits as its factorization.

1378411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81100.

The product of its digits is 672, while the sum is 25.

The square root of 1378411 is about 1174.0574943332. The cubic root of 1378411 is about 111.2908800653.

The spelling of 1378411 in words is "one million, three hundred seventy-eight thousand, four hundred eleven".