1129775449 has 8 divisors (see below), whose sum is σ = 1252687680. Its totient is φ = 1010230800.

The previous prime is 1129775447. The next prime is 1129775453. The reversal of 1129775449 is 9445779211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1129775449 - 2¹ = 1129775447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1129775447) 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 in 7 ways as a sum of consecutive naturals, for example, 841189 + ... + 842530.

It is an arithmetic number, because the mean of its divisors is an integer number (156585960).

Almost surely, 2^1129775449 is an apocalyptic number.

It is an amenable number.

1129775449 is a deficient number, since it is larger than the sum of its proper divisors (122912231).

1129775449 is a wasteful number, since it uses less digits than its factorization.

1129775449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1683791.

The product of its digits is 635040, while the sum is 49.

The square root of 1129775449 is about 33612.1324673101. The cubic root of 1129775449 is about 1041.5114392467.

The spelling of 1129775449 in words is "one billion, one hundred twenty-nine million, seven hundred seventy-five thousand, four hundred forty-nine".