1379631239 has 8 divisors (see below), whose sum is σ = 1631091360. Its totient is φ = 1141763616.

The previous prime is 1379631217. The next prime is 1379631257. The reversal of 1379631239 is 9321369731.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1379631239 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1379631239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1379631259) 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 7 ways as a sum of consecutive naturals, for example, 3397904 + ... + 3398309.

It is an arithmetic number, because the mean of its divisors is an integer number (203886420).

Almost surely, 2^1379631239 is an apocalyptic number.

1379631239 is a deficient number, since it is larger than the sum of its proper divisors (251460121).

1379631239 is an equidigital number, since it uses as much as digits as its factorization.

1379631239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6796249.

The product of its digits is 183708, while the sum is 44.

The square root of 1379631239 is about 37143.3875541798. The cubic root of 1379631239 is about 1113.2371048120.

The spelling of 1379631239 in words is "one billion, three hundred seventy-nine million, six hundred thirty-one thousand, two hundred thirty-nine".