2440045 has 4 divisors (see below), whose sum is σ = 2928060. Its totient is φ = 1952032.

The previous prime is 2440043. The next prime is 2440049. The reversal of 2440045 is 5400442.

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

It can be written as a sum of positive squares in 2 ways, for example, as 311364 + 2128681 = 558^2 + 1459^2 .

It is a cyclic number.

It is not a de Polignac number, because 2440045 - 2¹ = 2440043 is a prime.

It is a plaindrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2440043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244000 + ... + 244009.

It is an arithmetic number, because the mean of its divisors is an integer number (732015).

2^2440045 is an apocalyptic number.

It is an amenable number.

2440045 is a deficient number, since it is larger than the sum of its proper divisors (488015).

2440045 is an equidigital number, since it uses as much as digits as its factorization.

2440045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488014.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 2440045 is about 1562.0643392639. The cubic root of 2440045 is about 134.6271375610.

Adding to 2440045 its reverse (5400442), we get a palindrome (7840487).

The spelling of 2440045 in words is "two million, four hundred forty thousand, forty-five".