2129969029 has 2 divisors, whose sum is σ = 2129969030. Its totient is φ = 2129969028.

The previous prime is 2129968999. The next prime is 2129969053. The reversal of 2129969029 is 9209699212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1654292929 + 475676100 = 40673^2 + 21810^2 .

It is a cyclic number.

It is not a de Polignac number, because 2129969029 - 2⁹ = 2129968517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2129969059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064984514 + 1064984515.

It is an arithmetic number, because the mean of its divisors is an integer number (1064984515).

Almost surely, 2^2129969029 is an apocalyptic number.

It is an amenable number.

2129969029 is a deficient number, since it is larger than the sum of its proper divisors (1).

2129969029 is an equidigital number, since it uses as much as digits as its factorization.

2129969029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 314928, while the sum is 49.

The square root of 2129969029 is about 46151.5875024901. The cubic root of 2129969029 is about 1286.6421150768.

The spelling of 2129969029 in words is "two billion, one hundred twenty-nine million, nine hundred sixty-nine thousand, twenty-nine".