3884356121 has 4 divisors (see below), whose sum is σ = 3884502372. Its totient is φ = 3884209872.

The previous prime is 3884356117. The next prime is 3884356123. The reversal of 3884356121 is 1216534883.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1216534883 = 23 ⋅52892821.

It can be written as a sum of positive squares in 2 ways, for example, as 3511866121 + 372490000 = 59261^2 + 19300^2 .

It is a cyclic number.

It is not a de Polignac number, because 3884356121 - 2² = 3884356117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3884356123) 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, 20810 + ... + 90563.

It is an arithmetic number, because the mean of its divisors is an integer number (971125593).

Almost surely, 2^3884356121 is an apocalyptic number.

It is an amenable number.

3884356121 is a deficient number, since it is larger than the sum of its proper divisors (146251).

3884356121 is a wasteful number, since it uses less digits than its factorization.

3884356121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146250.

The product of its digits is 138240, while the sum is 41.

The square root of 3884356121 is about 62324.6028547315. The cubic root of 3884356121 is about 1571.9534450934.

The spelling of 3884356121 in words is "three billion, eight hundred eighty-four million, three hundred fifty-six thousand, one hundred twenty-one".