4400421663 has 16 divisors (see below), whose sum is σ = 6678902016. Its totient is φ = 2550968640.

The previous prime is 4400421659. The next prime is 4400421673. The reversal of 4400421663 is 3661240044.

It is not a de Polignac number, because 4400421663 - 2² = 4400421659 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4400421663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4400421673) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2898070 + ... + 2899587.

It is an arithmetic number, because the mean of its divisors is an integer number (417431376).

Almost surely, 2^4400421663 is an apocalyptic number.

4400421663 is a deficient number, since it is larger than the sum of its proper divisors (2278480353).

4400421663 is a wasteful number, since it uses less digits than its factorization.

4400421663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5797694.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 4400421663 is about 66335.6741354153. The cubic root of 4400421663 is about 1638.6948845997.

The spelling of 4400421663 in words is "four billion, four hundred million, four hundred twenty-one thousand, six hundred sixty-three".