3849421 has 2 divisors, whose sum is σ = 3849422. Its totient is φ = 3849420.

The previous prime is 3849409. The next prime is 3849437. The reversal of 3849421 is 1249483.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2515396 + 1334025 = 1586^2 + 1155^2 .

It is a cyclic number.

It is not a de Polignac number, because 3849421 - 2⁵ = 3849389 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3849401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1924710 + 1924711.

It is an arithmetic number, because the mean of its divisors is an integer number (1924711).

Almost surely, 2^3849421 is an apocalyptic number.

It is an amenable number.

3849421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3849421 is an equidigital number, since it uses as much as digits as its factorization.

3849421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 31.

The square root of 3849421 is about 1961.9941386253. The cubic root of 3849421 is about 156.7226634495.

The spelling of 3849421 in words is "three million, eight hundred forty-nine thousand, four hundred twenty-one".