334889921 has 2 divisors, whose sum is σ = 334889922. Its totient is φ = 334889920.

The previous prime is 334889911. The next prime is 334890011. The reversal of 334889921 is 129988433.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 263250625 + 71639296 = 16225^2 + 8464^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-334889921 is a prime.

It is a super-2 number, since 2×334889921² = 224302518374772482, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (334889911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167444960 + 167444961.

It is an arithmetic number, because the mean of its divisors is an integer number (167444961).

Almost surely, 2^334889921 is an apocalyptic number.

It is an amenable number.

334889921 is a deficient number, since it is larger than the sum of its proper divisors (1).

334889921 is an equidigital number, since it uses as much as digits as its factorization.

334889921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 47.

The square root of 334889921 is about 18299.9978415299. The cubic root of 334889921 is about 694.4388763135.

The spelling of 334889921 in words is "three hundred thirty-four million, eight hundred eighty-nine thousand, nine hundred twenty-one".