2440453 has 4 divisors (see below), whose sum is σ = 2451340. Its totient is φ = 2429568.

The previous prime is 2440447. The next prime is 2440457. The reversal of 2440453 is 3540442.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3540442 = 2 ⋅1770221.

It can be written as a sum of positive squares in 2 ways, for example, as 1181569 + 1258884 = 1087^2 + 1122^2 .

It is a cyclic number.

It is not a de Polignac number, because 2440453 - 2⁵ = 2440421 is a prime.

It is a super-3 number, since 3×2440453³ = 43604629333868519031, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2440457) 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, 5100 + ... + 5557.

It is an arithmetic number, because the mean of its divisors is an integer number (612835).

2^2440453 is an apocalyptic number.

It is an amenable number.

2440453 is a deficient number, since it is larger than the sum of its proper divisors (10887).

2440453 is a wasteful number, since it uses less digits than its factorization.

2440453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10886.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 2440453 is about 1562.1949302184. The cubic root of 2440453 is about 134.6346408121.

Adding to 2440453 its reverse (3540442), we get a palindrome (5980895).

The spelling of 2440453 in words is "two million, four hundred forty thousand, four hundred fifty-three".