1339123749 has 16 divisors (see below), whose sum is σ = 1849278720. Its totient is φ = 860932800.

The previous prime is 1339123727. The next prime is 1339123777. The reversal of 1339123749 is 9473219331.

It is not a de Polignac number, because 1339123749 - 2¹¹ = 1339121701 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1339123749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1339127749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67524 + ... + 85074.

It is an arithmetic number, because the mean of its divisors is an integer number (115579920).

Almost surely, 2^1339123749 is an apocalyptic number.

It is an amenable number.

1339123749 is a deficient number, since it is larger than the sum of its proper divisors (510154971).

1339123749 is a wasteful number, since it uses less digits than its factorization.

1339123749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18460.

The product of its digits is 122472, while the sum is 42.

The square root of 1339123749 is about 36594.0398015852. The cubic root of 1339123749 is about 1102.2334096605.

The spelling of 1339123749 in words is "one billion, three hundred thirty-nine million, one hundred twenty-three thousand, seven hundred forty-nine".