3221400349 has 2 divisors, whose sum is σ = 3221400350. Its totient is φ = 3221400348.

The previous prime is 3221400337. The next prime is 3221400373. The reversal of 3221400349 is 9430041223.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1614593124 + 1606807225 = 40182^2 + 40085^2 .

It is a cyclic number.

It is not a de Polignac number, because 3221400349 - 2²⁵ = 3187845917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3221400319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1610700174 + 1610700175.

It is an arithmetic number, because the mean of its divisors is an integer number (1610700175).

Almost surely, 2^3221400349 is an apocalyptic number.

It is an amenable number.

3221400349 is a deficient number, since it is larger than the sum of its proper divisors (1).

3221400349 is an equidigital number, since it uses as much as digits as its factorization.

3221400349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 3221400349 is about 56757.3814494644. The cubic root of 3221400349 is about 1476.8902853097.

The spelling of 3221400349 in words is "three billion, two hundred twenty-one million, four hundred thousand, three hundred forty-nine".