4370343721 has 2 divisors, whose sum is σ = 4370343722. Its totient is φ = 4370343720.

The previous prime is 4370343667. The next prime is 4370343751. The reversal of 4370343721 is 1273430734.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4145943321 + 224400400 = 64389^2 + 14980^2 .

It is a cyclic number.

It is not a de Polignac number, because 4370343721 - 2⁹ = 4370343209 is a prime.

It is not a weakly prime, because it can be changed into another prime (4370343751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2185171860 + 2185171861.

It is an arithmetic number, because the mean of its divisors is an integer number (2185171861).

Almost surely, 2^4370343721 is an apocalyptic number.

It is an amenable number.

4370343721 is a deficient number, since it is larger than the sum of its proper divisors (1).

4370343721 is an equidigital number, since it uses as much as digits as its factorization.

4370343721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 34.

The square root of 4370343721 is about 66108.5752455761. The cubic root of 4370343721 is about 1634.9527206571.

The spelling of 4370343721 in words is "four billion, three hundred seventy million, three hundred forty-three thousand, seven hundred twenty-one".