1139271849 has 6 divisors (see below), whose sum is σ = 1645614906. Its totient is φ = 759514560.

The previous prime is 1139271841. The next prime is 1139271851. The reversal of 1139271849 is 9481729311.

It can be written as a sum of positive squares in only one way, i.e., 976250025 + 163021824 = 31245^2 + 12768^2 .

It is not a de Polignac number, because 1139271849 - 2³ = 1139271841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1139271841) 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 5 ways as a sum of consecutive naturals, for example, 63292872 + ... + 63292889.

It is an arithmetic number, because the mean of its divisors is an integer number (274269151).

Almost surely, 2^1139271849 is an apocalyptic number.

It is an amenable number.

1139271849 is a deficient number, since it is larger than the sum of its proper divisors (506343057).

1139271849 is a wasteful number, since it uses less digits than its factorization.

1139271849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126585767 (or 126585764 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 1139271849 is about 33753.1013241746. The cubic root of 1139271849 is about 1044.4214646793.

The spelling of 1139271849 in words is "one billion, one hundred thirty-nine million, two hundred seventy-one thousand, eight hundred forty-nine".