1339689239 has 4 divisors (see below), whose sum is σ = 1531073424. Its totient is φ = 1148305056.

The previous prime is 1339689217. The next prime is 1339689277. The reversal of 1339689239 is 9329869331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1339689239 - 2¹² = 1339685143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1339689289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95692082 + ... + 95692095.

It is an arithmetic number, because the mean of its divisors is an integer number (382768356).

Almost surely, 2^1339689239 is an apocalyptic number.

1339689239 is a deficient number, since it is larger than the sum of its proper divisors (191384185).

1339689239 is an equidigital number, since it uses as much as digits as its factorization.

1339689239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191384184.

The product of its digits is 1889568, while the sum is 53.

The square root of 1339689239 is about 36601.7655175266. The cubic root of 1339689239 is about 1102.3885395244.

The spelling of 1339689239 in words is "one billion, three hundred thirty-nine million, six hundred eighty-nine thousand, two hundred thirty-nine".