3722440321 has 8 divisors (see below), whose sum is σ = 3733813800. Its totient is φ = 3711079680.

The previous prime is 3722440303. The next prime is 3722440333. The reversal of 3722440321 is 1230442273.

It can be written as a sum of positive squares in 4 ways, for example, as 394419600 + 3328020721 = 19860^2 + 57689^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3722440321 - 2⁷ = 3722440193 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 3722440321.

It is not an unprimeable number, because it can be changed into a prime (3722440301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1096695 + ... + 1100083.

It is an arithmetic number, because the mean of its divisors is an integer number (466726725).

Almost surely, 2^3722440321 is an apocalyptic number.

It is an amenable number.

3722440321 is a deficient number, since it is larger than the sum of its proper divisors (11373479).

3722440321 is a wasteful number, since it uses less digits than its factorization.

3722440321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6419.

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 3722440321 is about 61011.8047676021. The cubic root of 3722440321 is about 1549.8009208070.

Adding to 3722440321 its reverse (1230442273), we get a palindrome (4952882594).

The spelling of 3722440321 in words is "three billion, seven hundred twenty-two million, four hundred forty thousand, three hundred twenty-one".