3969622169 has 2 divisors, whose sum is σ = 3969622170. Its totient is φ = 3969622168.

The previous prime is 3969622157. The next prime is 3969622171. The reversal of 3969622169 is 9612269693.

3969622169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2601510025 + 1368112144 = 51005^2 + 36988^2 .

It is a cyclic number.

It is not a de Polignac number, because 3969622169 - 2⁸ = 3969621913 is a prime.

It is a super-2 number, since 2×3969622169² = 31515800329232529122, which contains 22 as substring.

Together with 3969622171, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3969622169.

It is not a weakly prime, because it can be changed into another prime (3969627169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1984811084 + 1984811085.

It is an arithmetic number, because the mean of its divisors is an integer number (1984811085).

Almost surely, 2^3969622169 is an apocalyptic number.

It is an amenable number.

3969622169 is a deficient number, since it is larger than the sum of its proper divisors (1).

3969622169 is an equidigital number, since it uses as much as digits as its factorization.

3969622169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1889568, while the sum is 53.

The square root of 3969622169 is about 63004.9376557108. The cubic root of 3969622169 is about 1583.3723526881.

The spelling of 3969622169 in words is "three billion, nine hundred sixty-nine million, six hundred twenty-two thousand, one hundred sixty-nine".