3855004217 has 4 divisors (see below), whose sum is σ = 4022613120. Its totient is φ = 3687395316.

The previous prime is 3855004207. The next prime is 3855004247. The reversal of 3855004217 is 7124005583.

It is a happy number.

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 3855004217 - 2⁸ = 3855003961 is a prime.

It is a super-2 number, since 2×3855004217² = 29722115026175566178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3855004207) 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 3 ways as a sum of consecutive naturals, for example, 83804417 + ... + 83804462.

It is an arithmetic number, because the mean of its divisors is an integer number (1005653280).

Almost surely, 2^3855004217 is an apocalyptic number.

It is an amenable number.

3855004217 is a deficient number, since it is larger than the sum of its proper divisors (167608903).

3855004217 is a wasteful number, since it uses less digits than its factorization.

3855004217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167608902.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 3855004217 is about 62088.6802646022. The cubic root of 3855004217 is about 1567.9839725787.

The spelling of 3855004217 in words is "three billion, eight hundred fifty-five million, four thousand, two hundred seventeen".