3279944561 has 2 divisors, whose sum is σ = 3279944562. Its totient is φ = 3279944560.

The previous prime is 3279944543. The next prime is 3279944567. The reversal of 3279944561 is 1654499723.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3174759025 + 105185536 = 56345^2 + 10256^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3279944561 is a prime.

It is not a weakly prime, because it can be changed into another prime (3279944567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1639972280 + 1639972281.

It is an arithmetic number, because the mean of its divisors is an integer number (1639972281).

Almost surely, 2^3279944561 is an apocalyptic number.

It is an amenable number.

3279944561 is a deficient number, since it is larger than the sum of its proper divisors (1).

3279944561 is an equidigital number, since it uses as much as digits as its factorization.

3279944561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1632960, while the sum is 50.

The square root of 3279944561 is about 57270.8002475956. The cubic root of 3279944561 is about 1485.7833972249.

The spelling of 3279944561 in words is "three billion, two hundred seventy-nine million, nine hundred forty-four thousand, five hundred sixty-one".