1139349728 has 24 divisors (see below), whose sum is σ = 2447013240. Its totient is φ = 517886080.

The previous prime is 1139349721. The next prime is 1139349749. The reversal of 1139349728 is 8279439311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139349721) 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 3 ways as a sum of consecutive naturals, for example, 1618043 + ... + 1618746.

It is an arithmetic number, because the mean of its divisors is an integer number (101958885).

Almost surely, 2^1139349728 is an apocalyptic number.

It is an amenable number.

1139349728 is an abundant number, since it is smaller than the sum of its proper divisors (1307663512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1139349728 is a wasteful number, since it uses less digits than its factorization.

1139349728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3236810 (or 3236802 counting only the distinct ones).

The product of its digits is 326592, while the sum is 47.

The square root of 1139349728 is about 33754.2549614119. The cubic root of 1139349728 is about 1044.4452625247.

The spelling of 1139349728 in words is "one billion, one hundred thirty-nine million, three hundred forty-nine thousand, seven hundred twenty-eight".