1129909287 has 8 divisors (see below), whose sum is σ = 1622433904. Its totient is φ = 695328768.

The previous prime is 1129909273. The next prime is 1129909303. The reversal of 1129909287 is 7829099211.

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

It is not a de Polignac number, because 1129909287 - 2¹² = 1129905191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129909087) 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, 14485978 + ... + 14486055.

It is an arithmetic number, because the mean of its divisors is an integer number (202804238).

Almost surely, 2^1129909287 is an apocalyptic number.

1129909287 is a deficient number, since it is larger than the sum of its proper divisors (492524617).

1129909287 is a wasteful number, since it uses less digits than its factorization.

1129909287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28972049.

The product of its (nonzero) digits is 163296, while the sum is 48.

The square root of 1129909287 is about 33614.1233263639. The cubic root of 1129909287 is about 1041.5525649129.

The spelling of 1129909287 in words is "one billion, one hundred twenty-nine million, nine hundred nine thousand, two hundred eighty-seven".