1384345 has 4 divisors (see below), whose sum is σ = 1661220. Its totient is φ = 1107472.

The previous prime is 1384343. The next prime is 1384349. The reversal of 1384345 is 5434831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5434831 = 23 ⋅236297.

It can be written as a sum of positive squares in 2 ways, for example, as 456976 + 927369 = 676^2 + 963^2 .

It is a cyclic number.

It is not a de Polignac number, because 1384345 - 2¹ = 1384343 is a prime.

It is a super-2 number, since 2×1384345² = 3832822158050, which contains 22 as substring.

1384345 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1384343) 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, 138430 + ... + 138439.

It is an arithmetic number, because the mean of its divisors is an integer number (415305).

2^1384345 is an apocalyptic number.

It is an amenable number.

1384345 is a deficient number, since it is larger than the sum of its proper divisors (276875).

1384345 is an equidigital number, since it uses as much as digits as its factorization.

1384345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276874.

The product of its digits is 5760, while the sum is 28.

The square root of 1384345 is about 1176.5819138505. The cubic root of 1384345 is about 111.4503522589.

The spelling of 1384345 in words is "one million, three hundred eighty-four thousand, three hundred forty-five".