1239050013 has 4 divisors (see below), whose sum is σ = 1652066688. Its totient is φ = 826033340.

The previous prime is 1239050011. The next prime is 1239050023. The reversal of 1239050013 is 3100509321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1239050013 - 2¹ = 1239050011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1239050011) 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 3 ways as a sum of consecutive naturals, for example, 206508333 + ... + 206508338.

It is an arithmetic number, because the mean of its divisors is an integer number (413016672).

Almost surely, 2^1239050013 is an apocalyptic number.

It is an amenable number.

1239050013 is a deficient number, since it is larger than the sum of its proper divisors (413016675).

1239050013 is an equidigital number, since it uses as much as digits as its factorization.

1239050013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413016674.

The product of its (nonzero) digits is 810, while the sum is 24.

The square root of 1239050013 is about 35200.1422298263. The cubic root of 1239050013 is about 1074.0626443768.

Adding to 1239050013 its reverse (3100509321), we get a palindrome (4339559334).

The spelling of 1239050013 in words is "one billion, two hundred thirty-nine million, fifty thousand, thirteen".