2129669639 has 2 divisors, whose sum is σ = 2129669640. Its totient is φ = 2129669638.

The previous prime is 2129669623. The next prime is 2129669653. The reversal of 2129669639 is 9369669212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2129669639 - 2⁴ = 2129669623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2129669609) 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, 1064834819 + 1064834820.

It is an arithmetic number, because the mean of its divisors is an integer number (1064834820).

Almost surely, 2^2129669639 is an apocalyptic number.

2129669639 is a deficient number, since it is larger than the sum of its proper divisors (1).

2129669639 is an equidigital number, since it uses as much as digits as its factorization.

2129669639 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2129669639 is about 46148.3438381054. The cubic root of 2129669639 is about 1286.5818284674.

The spelling of 2129669639 in words is "two billion, one hundred twenty-nine million, six hundred sixty-nine thousand, six hundred thirty-nine".