3855009609 has 12 divisors (see below), whose sum is σ = 6074560752. Its totient is φ = 2336369400.

The previous prime is 3855009593. The next prime is 3855009611. The reversal of 3855009609 is 9069005583.

3855009609 is a `hidden beast` number, since 3 + 8 + 550 + 0 + 96 + 0 + 9 = 666.

It is not a de Polignac number, because 3855009609 - 2⁴ = 3855009593 is a prime.

It is a super-2 number, since 2×3855009609² = 29722198170964665762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3855009659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19469647 + ... + 19469844.

It is an arithmetic number, because the mean of its divisors is an integer number (506213396).

Almost surely, 2^3855009609 is an apocalyptic number.

It is an amenable number.

3855009609 is a deficient number, since it is larger than the sum of its proper divisors (2219551143).

3855009609 is a wasteful number, since it uses less digits than its factorization.

3855009609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38939508 (or 38939505 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The square root of 3855009609 is about 62088.7236863506. The cubic root of 3855009609 is about 1567.9847036255.

The spelling of 3855009609 in words is "three billion, eight hundred fifty-five million, nine thousand, six hundred nine".