3830521 has 4 divisors (see below), whose sum is σ = 3884544. Its totient is φ = 3776500.

The previous prime is 3830513. The next prime is 3830527. The reversal of 3830521 is 1250383.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1250383 = 821 ⋅1523.

It is a cyclic number.

It is not a de Polignac number, because 3830521 - 2³ = 3830513 is a prime.

It is a super-2 number, since 2×3830521² = 29345782262882, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3830492 and 3830501.

It is not an unprimeable number, because it can be changed into a prime (3830527) 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, 26905 + ... + 27046.

It is an arithmetic number, because the mean of its divisors is an integer number (971136).

Almost surely, 2^3830521 is an apocalyptic number.

It is an amenable number.

3830521 is a deficient number, since it is larger than the sum of its proper divisors (54023).

3830521 is an equidigital number, since it uses as much as digits as its factorization.

3830521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54022.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 3830521 is about 1957.1716838336. The cubic root of 3830521 is about 156.4657486789.

The spelling of 3830521 in words is "three million, eight hundred thirty thousand, five hundred twenty-one".