319955609 has 4 divisors (see below), whose sum is σ = 324005760. Its totient is φ = 315905460.

The previous prime is 319955563. The next prime is 319955627. The reversal of 319955609 is 906559913.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 319955609 - 2⁸ = 319955353 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (319955659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2024957 + ... + 2025114.

It is an arithmetic number, because the mean of its divisors is an integer number (81001440).

Almost surely, 2^319955609 is an apocalyptic number.

It is an amenable number.

319955609 is a deficient number, since it is larger than the sum of its proper divisors (4050151).

319955609 is an equidigital number, since it uses as much as digits as its factorization.

319955609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4050150.

The product of its (nonzero) digits is 328050, while the sum is 47.

The square root of 319955609 is about 17887.3030107951. The cubic root of 319955609 is about 683.9587490655.

The spelling of 319955609 in words is "three hundred nineteen million, nine hundred fifty-five thousand, six hundred nine".