3407221 has 2 divisors, whose sum is σ = 3407222. Its totient is φ = 3407220.

The previous prime is 3407207. The next prime is 3407267. The reversal of 3407221 is 1227043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2208196 + 1199025 = 1486^2 + 1095^2 .

It is a cyclic number.

It is not a de Polignac number, because 3407221 - 2⁷ = 3407093 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3407281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1703610 + 1703611.

It is an arithmetic number, because the mean of its divisors is an integer number (1703611).

Almost surely, 2^3407221 is an apocalyptic number.

It is an amenable number.

3407221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3407221 is an equidigital number, since it uses as much as digits as its factorization.

3407221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 3407221 is about 1845.8659214580. The cubic root of 3407221 is about 150.4758370792.

The spelling of 3407221 in words is "three million, four hundred seven thousand, two hundred twenty-one".