319926947 has 2 divisors, whose sum is σ = 319926948. Its totient is φ = 319926946.

The previous prime is 319926917. The next prime is 319926973. The reversal of 319926947 is 749629913.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 319926947 - 2¹⁰ = 319925923 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 319926895 and 319926904.

It is not a weakly prime, because it can be changed into another prime (319926917) 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 as a sum of consecutive naturals, namely, 159963473 + 159963474.

It is an arithmetic number, because the mean of its divisors is an integer number (159963474).

Almost surely, 2^319926947 is an apocalyptic number.

319926947 is a deficient number, since it is larger than the sum of its proper divisors (1).

319926947 is an equidigital number, since it uses as much as digits as its factorization.

319926947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 734832, while the sum is 50.

The square root of 319926947 is about 17886.5018100242. The cubic root of 319926947 is about 683.9383251790.

The spelling of 319926947 in words is "three hundred nineteen million, nine hundred twenty-six thousand, nine hundred forty-seven".