440240845 has 16 divisors (see below), whose sum is σ = 577035648. Its totient is φ = 319775040.

The previous prime is 440240833. The next prime is 440240873. The reversal of 440240845 is 548042044.

It is a de Polignac number, because none of the positive numbers 2^k-440240845 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43672 + ... + 52798.

It is an arithmetic number, because the mean of its divisors is an integer number (36064728).

Almost surely, 2^440240845 is an apocalyptic number.

It is an amenable number.

440240845 is a deficient number, since it is larger than the sum of its proper divisors (136794803).

440240845 is a wasteful number, since it uses less digits than its factorization.

440240845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10020.

The product of its (nonzero) digits is 20480, while the sum is 31.

The square root of 440240845 is about 20981.9170954420. The cubic root of 440240845 is about 760.7292429127.

Adding to 440240845 its reverse (548042044), we get a palindrome (988282889).

The spelling of 440240845 in words is "four hundred forty million, two hundred forty thousand, eight hundred forty-five".