3916445209 has 4 divisors (see below), whose sum is σ = 3917883060. Its totient is φ = 3915007360.

The previous prime is 3916445201. The next prime is 3916445213. The reversal of 3916445209 is 9025446193.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9025446193 = 3673 ⋅2457241.

It can be written as a sum of positive squares in 2 ways, for example, as 2257675225 + 1658769984 = 47515^2 + 40728^2 .

It is a cyclic number.

It is not a de Polignac number, because 3916445209 - 2³ = 3916445201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3916445201) 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, 714832 + ... + 720289.

It is an arithmetic number, because the mean of its divisors is an integer number (979470765).

Almost surely, 2^3916445209 is an apocalyptic number.

It is an amenable number.

3916445209 is a deficient number, since it is larger than the sum of its proper divisors (1437851).

3916445209 is a wasteful number, since it uses less digits than its factorization.

3916445209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1437850.

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 3916445209 is about 62581.5085228856. The cubic root of 3916445209 is about 1576.2702723076.

The spelling of 3916445209 in words is "three billion, nine hundred sixteen million, four hundred forty-five thousand, two hundred nine".