440245663 has 32 divisors (see below), whose sum is σ = 545513472. Its totient is φ = 349747200.

The previous prime is 440245661. The next prime is 440245697. The reversal of 440245663 is 366542044.

It is not a de Polignac number, because 440245663 - 2¹ = 440245661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440245661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 207295 + ... + 209407.

It is an arithmetic number, because the mean of its divisors is an integer number (17047296).

Almost surely, 2^440245663 is an apocalyptic number.

440245663 is a deficient number, since it is larger than the sum of its proper divisors (105267809).

440245663 is a wasteful number, since it uses less digits than its factorization.

440245663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2215.

The product of its (nonzero) digits is 69120, while the sum is 34.

The square root of 440245663 is about 20982.0319082781. The cubic root of 440245663 is about 760.7320180452.

The spelling of 440245663 in words is "four hundred forty million, two hundred forty-five thousand, six hundred sixty-three".