4238405663 has 4 divisors (see below), whose sum is σ = 4238615520. Its totient is φ = 4238195808.

The previous prime is 4238405659. The next prime is 4238405683. The reversal of 4238405663 is 3665048324.

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

It is a cyclic number.

It is not a de Polignac number, because 4238405663 - 2² = 4238405659 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4238405663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4238405603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70970 + ... + 116247.

It is an arithmetic number, because the mean of its divisors is an integer number (1059653880).

Almost surely, 2^4238405663 is an apocalyptic number.

4238405663 is a deficient number, since it is larger than the sum of its proper divisors (209857).

4238405663 is a wasteful number, since it uses less digits than its factorization.

4238405663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209856.

The product of its (nonzero) digits is 414720, while the sum is 41.

The square root of 4238405663 is about 65103.0388154040. The cubic root of 4238405663 is about 1618.3315728178.

The spelling of 4238405663 in words is "four billion, two hundred thirty-eight million, four hundred five thousand, six hundred sixty-three".