318944447 has 2 divisors, whose sum is σ = 318944448. Its totient is φ = 318944446.

The previous prime is 318944441. The next prime is 318944503. The reversal of 318944447 is 744449813.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 318944447 - 2¹² = 318940351 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 318944398 and 318944407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318944441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159472223 + 159472224.

It is an arithmetic number, because the mean of its divisors is an integer number (159472224).

Almost surely, 2^318944447 is an apocalyptic number.

318944447 is a deficient number, since it is larger than the sum of its proper divisors (1).

318944447 is an equidigital number, since it uses as much as digits as its factorization.

318944447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 44.

The square root of 318944447 is about 17859.0158463449. The cubic root of 318944447 is about 683.2374792906.

The spelling of 318944447 in words is "three hundred eighteen million, nine hundred forty-four thousand, four hundred forty-seven".