9139420669 has 2 divisors, whose sum is σ = 9139420670. Its totient is φ = 9139420668.

The previous prime is 9139420649. The next prime is 9139420699. The reversal of 9139420669 is 9660249319.

9139420669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9123115225 + 16305444 = 95515^2 + 4038^2 .

It is a cyclic number.

It is not a de Polignac number, because 9139420669 - 2⁵ = 9139420637 is a prime.

It is a super-2 number, since 2×9139420669² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9139420649) 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, 4569710334 + 4569710335.

It is an arithmetic number, because the mean of its divisors is an integer number (4569710335).

Almost surely, 2^9139420669 is an apocalyptic number.

It is an amenable number.

9139420669 is a deficient number, since it is larger than the sum of its proper divisors (1).

9139420669 is an equidigital number, since it uses as much as digits as its factorization.

9139420669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 629856, while the sum is 49.

The square root of 9139420669 is about 95600.3173059588. The cubic root of 9139420669 is about 2090.7698200437.

The spelling of 9139420669 in words is "nine billion, one hundred thirty-nine million, four hundred twenty thousand, six hundred sixty-nine".