7346446421 has 2 divisors, whose sum is σ = 7346446422. Its totient is φ = 7346446420.

The previous prime is 7346446409. The next prime is 7346446427. The reversal of 7346446421 is 1246446437.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5627100196 + 1719346225 = 75014^2 + 41465^2 .

It is a cyclic number.

It is not a de Polignac number, because 7346446421 - 2⁶ = 7346446357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7346446427) 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 as a sum of consecutive naturals, namely, 3673223210 + 3673223211.

It is an arithmetic number, because the mean of its divisors is an integer number (3673223211).

Almost surely, 2^7346446421 is an apocalyptic number.

It is an amenable number.

7346446421 is a deficient number, since it is larger than the sum of its proper divisors (1).

7346446421 is an equidigital number, since it uses as much as digits as its factorization.

7346446421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 41.

The square root of 7346446421 is about 85711.4135981901. The cubic root of 7346446421 is about 1943.9828916180.

The spelling of 7346446421 in words is "seven billion, three hundred forty-six million, four hundred forty-six thousand, four hundred twenty-one".