3406021 has 8 divisors (see below), whose sum is σ = 3544920. Its totient is φ = 3268608.

The previous prime is 3406009. The next prime is 3406027. The reversal of 3406021 is 1206043.

It can be written as a sum of positive squares in 4 ways, for example, as 2220100 + 1185921 = 1490^2 + 1089^2 .

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 3406021 - 2⁹ = 3405509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3405986 and 3406004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3406027) 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 in 7 ways as a sum of consecutive naturals, for example, 7225 + ... + 7681.

It is an arithmetic number, because the mean of its divisors is an integer number (443115).

Almost surely, 2^3406021 is an apocalyptic number.

It is an amenable number.

3406021 is a deficient number, since it is larger than the sum of its proper divisors (138899).

3406021 is a wasteful number, since it uses less digits than its factorization.

3406021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 3406021 is about 1845.5408421382. The cubic root of 3406021 is about 150.4581694837.

The spelling of 3406021 in words is "three million, four hundred six thousand, twenty-one".