3969658061 has 2 divisors, whose sum is σ = 3969658062. Its totient is φ = 3969658060.

The previous prime is 3969658031. The next prime is 3969658073. The reversal of 3969658061 is 1608569693.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2120142025 + 1849516036 = 46045^2 + 43006^2 .

It is a cyclic number.

It is not a de Polignac number, because 3969658061 - 2⁶ = 3969657997 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3969657994 and 3969658012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3969658031) 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 as a sum of consecutive naturals, namely, 1984829030 + 1984829031.

It is an arithmetic number, because the mean of its divisors is an integer number (1984829031).

Almost surely, 2^3969658061 is an apocalyptic number.

It is an amenable number.

3969658061 is a deficient number, since it is larger than the sum of its proper divisors (1).

3969658061 is an equidigital number, since it uses as much as digits as its factorization.

3969658061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2099520, while the sum is 53.

The square root of 3969658061 is about 63005.2224898857. Note that the first 3 decimals coincide. The cubic root of 3969658061 is about 1583.3771247820.

The spelling of 3969658061 in words is "three billion, nine hundred sixty-nine million, six hundred fifty-eight thousand, sixty-one".