440123045 has 4 divisors (see below), whose sum is σ = 528147660. Its totient is φ = 352098432.

The previous prime is 440123023. The next prime is 440123051. The reversal of 440123045 is 540321044.

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 149181796 + 290941249 = 12214^2 + 17057^2 .

It is a cyclic number.

It is not a de Polignac number, because 440123045 - 2⁶ = 440122981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 440123045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44012300 + ... + 44012309.

It is an arithmetic number, because the mean of its divisors is an integer number (132036915).

Almost surely, 2^440123045 is an apocalyptic number.

It is an amenable number.

440123045 is a deficient number, since it is larger than the sum of its proper divisors (88024615).

440123045 is an equidigital number, since it uses as much as digits as its factorization.

440123045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88024614.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 440123045 is about 20979.1097284894. The cubic root of 440123045 is about 760.6613846785.

Adding to 440123045 its reverse (540321044), we get a palindrome (980444089).

The spelling of 440123045 in words is "four hundred forty million, one hundred twenty-three thousand, forty-five".