4002320445 has 32 divisors (see below), whose sum is σ = 6474470400. Its totient is φ = 2111069184.

The previous prime is 4002320423. The next prime is 4002320461. The reversal of 4002320445 is 5440232004.

It is not a de Polignac number, because 4002320445 - 2¹⁹ = 4001796157 is a prime.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 860436 + ... + 865074.

It is an arithmetic number, because the mean of its divisors is an integer number (202327200).

Almost surely, 2^4002320445 is an apocalyptic number.

It is an amenable number.

4002320445 is a deficient number, since it is larger than the sum of its proper divisors (2472149955).

4002320445 is a wasteful number, since it uses less digits than its factorization.

4002320445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5269.

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 4002320445 is about 63263.8952721060. The cubic root of 4002320445 is about 1587.7079490339.

Adding to 4002320445 its reverse (5440232004), we get a palindrome (9442552449).

The spelling of 4002320445 in words is "four billion, two million, three hundred twenty thousand, four hundred forty-five".