1238730447 has 8 divisors (see below), whose sum is σ = 1708593840. Its totient is φ = 797343680.

The previous prime is 1238730443. The next prime is 1238730487. The reversal of 1238730447 is 7440378321.

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

It is a cyclic number.

It is not a de Polignac number, because 1238730447 - 2² = 1238730443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1238730443) 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 7 ways as a sum of consecutive naturals, for example, 7119054 + ... + 7119227.

It is an arithmetic number, because the mean of its divisors is an integer number (213574230).

Almost surely, 2^1238730447 is an apocalyptic number.

1238730447 is a deficient number, since it is larger than the sum of its proper divisors (469863393).

1238730447 is a wasteful number, since it uses less digits than its factorization.

1238730447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14238313.

The product of its (nonzero) digits is 112896, while the sum is 39.

The square root of 1238730447 is about 35195.6026656740. The cubic root of 1238730447 is about 1073.9702985173.

The spelling of 1238730447 in words is "one billion, two hundred thirty-eight million, seven hundred thirty thousand, four hundred forty-seven".