334008721 has 2 divisors, whose sum is σ = 334008722. Its totient is φ = 334008720.

The previous prime is 334008659. The next prime is 334008797. The reversal of 334008721 is 127800433.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 326308096 + 7700625 = 18064^2 + 2775^2 .

It is a cyclic number.

It is not a de Polignac number, because 334008721 - 2¹⁵ = 333975953 is a prime.

It is a super-2 number, since 2×334008721² = 223123651408111682, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 334008721.

It is not a weakly prime, because it can be changed into another prime (334008221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167004360 + 167004361.

It is an arithmetic number, because the mean of its divisors is an integer number (167004361).

Almost surely, 2^334008721 is an apocalyptic number.

It is an amenable number.

334008721 is a deficient number, since it is larger than the sum of its proper divisors (1).

334008721 is an equidigital number, since it uses as much as digits as its factorization.

334008721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 334008721 is about 18275.9054768840. The cubic root of 334008721 is about 693.8292460837.

The spelling of 334008721 in words is "three hundred thirty-four million, eight thousand, seven hundred twenty-one".