4438156769 has 2 divisors, whose sum is σ = 4438156770. Its totient is φ = 4438156768.

The previous prime is 4438156759. The next prime is 4438156829. The reversal of 4438156769 is 9676518344.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4256257600 + 181899169 = 65240^2 + 13487^2 .

It is a cyclic number.

It is not a de Polignac number, because 4438156769 - 2⁴ = 4438156753 is a prime.

It is a super-2 number, since 2×4438156769² = 39394471012441038722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4438156769.

It is not a weakly prime, because it can be changed into another prime (4438156759) 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, 2219078384 + 2219078385.

It is an arithmetic number, because the mean of its divisors is an integer number (2219078385).

Almost surely, 2^4438156769 is an apocalyptic number.

It is an amenable number.

4438156769 is a deficient number, since it is larger than the sum of its proper divisors (1).

4438156769 is an equidigital number, since it uses as much as digits as its factorization.

4438156769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4354560, while the sum is 53.

The square root of 4438156769 is about 66619.4924102548. The cubic root of 4438156769 is about 1643.3656799142.

The spelling of 4438156769 in words is "four billion, four hundred thirty-eight million, one hundred fifty-six thousand, seven hundred sixty-nine".