4432320405 has 20 divisors (see below), whose sum is σ = 7945345452. Its totient is φ = 2363904000.

The previous prime is 4432320401. The next prime is 4432320421. The reversal of 4432320405 is 5040232344.

It can be written as a sum of positive squares in 2 ways, for example, as 940219569 + 3492100836 = 30663^2 + 59094^2 .

It is not a de Polignac number, because 4432320405 - 2² = 4432320401 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4432320401) 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 19 ways as a sum of consecutive naturals, for example, 5471596 + ... + 5472405.

Almost surely, 2^4432320405 is an apocalyptic number.

4432320405 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4432320405 is a deficient number, since it is larger than the sum of its proper divisors (3513025047).

4432320405 is a wasteful number, since it uses less digits than its factorization.

4432320405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10944018 (or 10944009 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 4432320405 is about 66575.6742737165. The cubic root of 4432320405 is about 1642.6449987711.

Adding to 4432320405 its reverse (5040232344), we get a palindrome (9472552749).

The spelling of 4432320405 in words is "four billion, four hundred thirty-two million, three hundred twenty thousand, four hundred five".