1347994439 has 4 divisors (see below), whose sum is σ = 1470539400. Its totient is φ = 1225449480.

The previous prime is 1347994429. The next prime is 1347994457. The reversal of 1347994439 is 9344997431.

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 1347994439 - 2⁸ = 1347994183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1347994429) 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 3 ways as a sum of consecutive naturals, for example, 61272464 + ... + 61272485.

It is an arithmetic number, because the mean of its divisors is an integer number (367634850).

Almost surely, 2^1347994439 is an apocalyptic number.

1347994439 is a deficient number, since it is larger than the sum of its proper divisors (122544961).

1347994439 is a wasteful number, since it uses less digits than its factorization.

1347994439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122544960.

The product of its digits is 2939328, while the sum is 53.

The square root of 1347994439 is about 36715.0437695504. The cubic root of 1347994439 is about 1104.6618783528.

The spelling of 1347994439 in words is "one billion, three hundred forty-seven million, nine hundred ninety-four thousand, four hundred thirty-nine".