319447947 has 16 divisors (see below), whose sum is σ = 524222720. Its totient is φ = 168499872.

The previous prime is 319447939. The next prime is 319447981. The reversal of 319447947 is 749744913.

It is not a de Polignac number, because 319447947 - 2³ = 319447939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 319447896 and 319447905.

It is not an unprimeable number, because it can be changed into a prime (319447747) 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 15 ways as a sum of consecutive naturals, for example, 584797 + ... + 585342.

It is an arithmetic number, because the mean of its divisors is an integer number (32763920).

Almost surely, 2^319447947 is an apocalyptic number.

319447947 is a deficient number, since it is larger than the sum of its proper divisors (204774773).

319447947 is a wasteful number, since it uses less digits than its factorization.

319447947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170162.

The product of its digits is 762048, while the sum is 48.

The square root of 319447947 is about 17873.1068088343. The cubic root of 319447947 is about 683.5968200362.

The spelling of 319447947 in words is "three hundred nineteen million, four hundred forty-seven thousand, nine hundred forty-seven".