4449156169 has 2 divisors, whose sum is σ = 4449156170. Its totient is φ = 4449156168.

The previous prime is 4449156157. The next prime is 4449156197. The reversal of 4449156169 is 9616519444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4387737600 + 61418569 = 66240^2 + 7837^2 .

It is a cyclic number.

It is not a de Polignac number, because 4449156169 - 2⁵ = 4449156137 is a prime.

It is a super-2 number, since 2×4449156169² = 39589981232301513122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4449156149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2224578084 + 2224578085.

It is an arithmetic number, because the mean of its divisors is an integer number (2224578085).

Almost surely, 2^4449156169 is an apocalyptic number.

It is an amenable number.

4449156169 is a deficient number, since it is larger than the sum of its proper divisors (1).

4449156169 is an equidigital number, since it uses as much as digits as its factorization.

4449156169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 49.

The square root of 4449156169 is about 66701.9952400226. The cubic root of 4449156169 is about 1644.7221832919.

The spelling of 4449156169 in words is "four billion, four hundred forty-nine million, one hundred fifty-six thousand, one hundred sixty-nine".