2149669439 has 2 divisors, whose sum is σ = 2149669440. Its totient is φ = 2149669438.

The previous prime is 2149669433. The next prime is 2149669507. The reversal of 2149669439 is 9349669412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2149669439 - 2¹⁶ = 2149603903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2149669433) 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, 1074834719 + 1074834720.

It is an arithmetic number, because the mean of its divisors is an integer number (1074834720).

Almost surely, 2^2149669439 is an apocalyptic number.

2149669439 is a deficient number, since it is larger than the sum of its proper divisors (1).

2149669439 is an equidigital number, since it uses as much as digits as its factorization.

2149669439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2519424, while the sum is 53.

The square root of 2149669439 is about 46364.5278095227. The cubic root of 2149669439 is about 1290.5967311113.

The spelling of 2149669439 in words is "two billion, one hundred forty-nine million, six hundred sixty-nine thousand, four hundred thirty-nine".