1394007839 has 4 divisors (see below), whose sum is σ = 1593151824. Its totient is φ = 1194863856.

The previous prime is 1394007773. The next prime is 1394007863. The reversal of 1394007839 is 9387004931.

It is a happy number.

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 1394007839 - 2²⁰ = 1392959263 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 1394007839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1394007869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99571982 + ... + 99571995.

It is an arithmetic number, because the mean of its divisors is an integer number (398287956).

Almost surely, 2^1394007839 is an apocalyptic number.

1394007839 is a deficient number, since it is larger than the sum of its proper divisors (199143985).

1394007839 is an equidigital number, since it uses as much as digits as its factorization.

1394007839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199143984.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 1394007839 is about 37336.4143832800. The cubic root of 1394007839 is about 1117.0906204673.

The spelling of 1394007839 in words is "one billion, three hundred ninety-four million, seven thousand, eight hundred thirty-nine".