3909395317 has 4 divisors (see below), whose sum is σ = 3909838176. Its totient is φ = 3908952460.

The previous prime is 3909395219. The next prime is 3909395339. The reversal of 3909395317 is 7135939093.

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 a de Polignac number, because none of the positive numbers 2^k-3909395317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3909395377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207913 + ... + 225934.

It is an arithmetic number, because the mean of its divisors is an integer number (977459544).

Almost surely, 2^3909395317 is an apocalyptic number.

It is an amenable number.

3909395317 is a deficient number, since it is larger than the sum of its proper divisors (442859).

3909395317 is an equidigital number, since it uses as much as digits as its factorization.

3909395317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442858.

The product of its (nonzero) digits is 688905, while the sum is 49.

The square root of 3909395317 is about 62525.1574728125. The cubic root of 3909395317 is about 1575.3239030824.

The spelling of 3909395317 in words is "three billion, nine hundred nine million, three hundred ninety-five thousand, three hundred seventeen".