1129449889 has 8 divisors (see below), whose sum is σ = 1189362240. Its totient is φ = 1069584336.

The previous prime is 1129449883. The next prime is 1129449931. The reversal of 1129449889 is 9889449211.

It is a happy number.

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 1129449889 - 2⁵ = 1129449857 is a prime.

It is a super-2 number, since 2×1129449889² = 2551314103524224642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1129449883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44919 + ... + 65395.

It is an arithmetic number, because the mean of its divisors is an integer number (148670280).

Almost surely, 2^1129449889 is an apocalyptic number.

1129449889 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1129449889 is a deficient number, since it is larger than the sum of its proper divisors (59912351).

1129449889 is a wasteful number, since it uses less digits than its factorization.

1129449889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23399.

The product of its digits is 1492992, while the sum is 55.

The square root of 1129449889 is about 33607.2892242144. The cubic root of 1129449889 is about 1041.4113877897.

The spelling of 1129449889 in words is "one billion, one hundred twenty-nine million, four hundred forty-nine thousand, eight hundred eighty-nine".