3447522421 has 16 divisors (see below), whose sum is σ = 4011453568. Its totient is φ = 2901614400.

The previous prime is 3447522401. The next prime is 3447522437. The reversal of 3447522421 is 1242257443.

It is a cyclic number.

It is not a de Polignac number, because 3447522421 - 2¹⁹ = 3446998133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3447522401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255166 + ... + 268336.

It is an arithmetic number, because the mean of its divisors is an integer number (250715848).

Almost surely, 2^3447522421 is an apocalyptic number.

It is an amenable number.

3447522421 is a deficient number, since it is larger than the sum of its proper divisors (563931147).

3447522421 is a wasteful number, since it uses less digits than its factorization.

3447522421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13852.

The product of its digits is 53760, while the sum is 34.

The square root of 3447522421 is about 58715.6062814649. The cubic root of 3447522421 is about 1510.6680115254.

Adding to 3447522421 its reverse (1242257443), we get a palindrome (4689779864).

The spelling of 3447522421 in words is "three billion, four hundred forty-seven million, five hundred twenty-two thousand, four hundred twenty-one".