1129435899 has 16 divisors (see below), whose sum is σ = 1527206400. Its totient is φ = 742360256.

The previous prime is 1129435889. The next prime is 1129435921. The reversal of 1129435899 is 9985349211.

It is a cyclic number.

It is not a de Polignac number, because 1129435899 - 2⁹ = 1129435387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1129435819) 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 in 15 ways as a sum of consecutive naturals, for example, 89962 + ... + 101744.

It is an arithmetic number, because the mean of its divisors is an integer number (95450400).

Almost surely, 2^1129435899 is an apocalyptic number.

1129435899 is a deficient number, since it is larger than the sum of its proper divisors (397770501).

1129435899 is a wasteful number, since it uses less digits than its factorization.

1129435899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12234.

The product of its digits is 699840, while the sum is 51.

The square root of 1129435899 is about 33607.0810842001. The cubic root of 1129435899 is about 1041.4070879367.

The spelling of 1129435899 in words is "one billion, one hundred twenty-nine million, four hundred thirty-five thousand, eight hundred ninety-nine".