3441821 has 2 divisors, whose sum is σ = 3441822. Its totient is φ = 3441820.

The previous prime is 3441817. The next prime is 3441829. The reversal of 3441821 is 1281443.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3422500 + 19321 = 1850^2 + 139^2 .

It is a cyclic number.

It is not a de Polignac number, because 3441821 - 2² = 3441817 is a prime.

It is a super-2 number, since 2×3441821² = 23692263592082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3441829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1720910 + 1720911.

It is an arithmetic number, because the mean of its divisors is an integer number (1720911).

Almost surely, 2^3441821 is an apocalyptic number.

It is an amenable number.

3441821 is a deficient number, since it is larger than the sum of its proper divisors (1).

3441821 is an equidigital number, since it uses as much as digits as its factorization.

3441821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768, while the sum is 23.

The square root of 3441821 is about 1855.2145428494. The cubic root of 3441821 is about 150.9834784491.

The spelling of 3441821 in words is "three million, four hundred forty-one thousand, eight hundred twenty-one".