3885421 has 2 divisors, whose sum is σ = 3885422. Its totient is φ = 3885420.

The previous prime is 3885403. The next prime is 3885433. The reversal of 3885421 is 1245883.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2706025 + 1179396 = 1645^2 + 1086^2 .

It is an emirp because it is prime and its reverse (1245883) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3885421 - 2⁷ = 3885293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3885461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1942710 + 1942711.

It is an arithmetic number, because the mean of its divisors is an integer number (1942711).

Almost surely, 2^3885421 is an apocalyptic number.

It is an amenable number.

3885421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3885421 is an equidigital number, since it uses as much as digits as its factorization.

3885421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 31.

The square root of 3885421 is about 1971.1471279435. The cubic root of 3885421 is about 157.2097079990.

The spelling of 3885421 in words is "three million, eight hundred eighty-five thousand, four hundred twenty-one".