3421447 has 2 divisors, whose sum is σ = 3421448. Its totient is φ = 3421446.

The previous prime is 3421433. The next prime is 3421499. The reversal of 3421447 is 7441243.

It is a weak prime.

It is an emirp because it is prime and its reverse (7441243) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3421447 is a prime.

3421447 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3421417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1710723 + 1710724.

It is an arithmetic number, because the mean of its divisors is an integer number (1710724).

Almost surely, 2^3421447 is an apocalyptic number.

3421447 is a deficient number, since it is larger than the sum of its proper divisors (1).

3421447 is an equidigital number, since it uses as much as digits as its factorization.

3421447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 25.

The square root of 3421447 is about 1849.7153835117. The cubic root of 3421447 is about 150.6849710404.

The spelling of 3421447 in words is "three million, four hundred twenty-one thousand, four hundred forty-seven".