1144405 has 4 divisors (see below), whose sum is σ = 1373292. Its totient is φ = 915520.

The previous prime is 1144399. The next prime is 1144417. The reversal of 1144405 is 5044411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5044411 = 109 ⋅46279.

It can be written as a sum of positive squares in 2 ways, for example, as 236196 + 908209 = 486^2 + 953^2 .

It is not a de Polignac number, because 1144405 - 2⁷ = 1144277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114436 + ... + 114445.

It is an arithmetic number, because the mean of its divisors is an integer number (343323).

2^1144405 is an apocalyptic number.

It is an amenable number.

1144405 is a deficient number, since it is larger than the sum of its proper divisors (228887).

1144405 is an equidigital number, since it uses as much as digits as its factorization.

1144405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228886.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 1144405 is about 1069.7686665817. The cubic root of 1144405 is about 104.5987711092.

Adding to 1144405 its reverse (5044411), we get a palindrome (6188816).

The spelling of 1144405 in words is "one million, one hundred forty-four thousand, four hundred five".