1129449139 has 24 divisors (see below), whose sum is σ = 1403495520. Its totient is φ = 890332560.

The previous prime is 1129449131. The next prime is 1129449187. The reversal of 1129449139 is 9319449211.

It is a happy number.

It is not a de Polignac number, because 1129449139 - 2³ = 1129449131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1129449095 and 1129449104.

It is not an unprimeable number, because it can be changed into a prime (1129449131) 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 23 ways as a sum of consecutive naturals, for example, 4167574 + ... + 4167844.

It is an arithmetic number, because the mean of its divisors is an integer number (58478980).

Almost surely, 2^1129449139 is an apocalyptic number.

1129449139 is a deficient number, since it is larger than the sum of its proper divisors (274046381).

1129449139 is an frugal number, since it uses more digits than its factorization.

1129449139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588 (or 291 counting only the distinct ones).

The product of its digits is 69984, while the sum is 43.

The square root of 1129449139 is about 33607.2780659190. The cubic root of 1129449139 is about 1041.4111572767.

The spelling of 1129449139 in words is "one billion, one hundred twenty-nine million, four hundred forty-nine thousand, one hundred thirty-nine".