6944177021 has 2 divisors, whose sum is σ = 6944177022. Its totient is φ = 6944177020.

The previous prime is 6944177003. The next prime is 6944177047. The reversal of 6944177021 is 1207714496.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6777405625 + 166771396 = 82325^2 + 12914^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6944177021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6944177021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6944177621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3472088510 + 3472088511.

It is an arithmetic number, because the mean of its divisors is an integer number (3472088511).

Almost surely, 2^6944177021 is an apocalyptic number.

It is an amenable number.

6944177021 is a deficient number, since it is larger than the sum of its proper divisors (1).

6944177021 is an equidigital number, since it uses as much as digits as its factorization.

6944177021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 6944177021 is about 83331.7287772191. The cubic root of 6944177021 is about 1907.8325807338.

The spelling of 6944177021 in words is "six billion, nine hundred forty-four million, one hundred seventy-seven thousand, twenty-one".