3430821 has 8 divisors (see below), whose sum is σ = 4843584. Its totient is φ = 2152640.

The previous prime is 3430813. The next prime is 3430829. The reversal of 3430821 is 1280343.

It is a happy number.

3430821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3430813) and next prime (3430829).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3430821 - 2³ = 3430813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3430829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33585 + ... + 33686.

It is an arithmetic number, because the mean of its divisors is an integer number (605448).

Almost surely, 2^3430821 is an apocalyptic number.

It is an amenable number.

3430821 is a deficient number, since it is larger than the sum of its proper divisors (1412763).

3430821 is a wasteful number, since it uses less digits than its factorization.

3430821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67291.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 3430821 is about 1852.2475536493. The cubic root of 3430821 is about 150.8224599333.

The spelling of 3430821 in words is "three million, four hundred thirty thousand, eight hundred twenty-one".