6907438321 has 27 divisors (see below), whose sum is σ = 8324478873. Its totient is φ = 5714712360.

The previous prime is 6907438289. The next prime is 6907438397. The reversal of 6907438321 is 1238347096.

The square root of 6907438321 is 83111.

It is a perfect power (a square), and thus also a powerful number.

6907438321 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6907438321 - 2⁵ = 6907438289 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6907438121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 18034896 + ... + 18035278.

Almost surely, 2^6907438321 is an apocalyptic number.

6907438321 is the 83111-st square number.

6907438321 is the 41556-th centered octagonal number.

It is an amenable number.

6907438321 is a deficient number, since it is larger than the sum of its proper divisors (1417040552).

6907438321 is an frugal number, since it uses more digits than its factorization.

6907438321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842 (or 421 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 43.

The cubic root of 6907438321 is about 1904.4621184029.

The spelling of 6907438321 in words is "six billion, nine hundred seven million, four hundred thirty-eight thousand, three hundred twenty-one".