334663421 has 2 divisors, whose sum is σ = 334663422. Its totient is φ = 334663420.

The previous prime is 334663379. The next prime is 334663481. The reversal of 334663421 is 124366433.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 303247396 + 31416025 = 17414^2 + 5605^2 .

It is an emirp because it is prime and its reverse (124366433) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-334663421 is a prime.

It is a super-2 number, since 2×334663421² = 223999210710846482, which contains 22 as substring.

It is a Chen prime.

It is equal to p_18022937 and since 334663421 and 18022937 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (334663481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167331710 + 167331711.

It is an arithmetic number, because the mean of its divisors is an integer number (167331711).

Almost surely, 2^334663421 is an apocalyptic number.

It is an amenable number.

334663421 is a deficient number, since it is larger than the sum of its proper divisors (1).

334663421 is an equidigital number, since it uses as much as digits as its factorization.

334663421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 32.

The square root of 334663421 is about 18293.8082694665. The cubic root of 334663421 is about 694.2822816938.

The spelling of 334663421 in words is "three hundred thirty-four million, six hundred sixty-three thousand, four hundred twenty-one".