333666989 has 2 divisors, whose sum is σ = 333666990. Its totient is φ = 333666988.

The previous prime is 333666967. The next prime is 333667001. The reversal of 333666989 is 989666333.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 249798025 + 83868964 = 15805^2 + 9158^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-333666989 is a prime.

It is a super-2 number, since 2×333666989² = 222667319096652242, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 333666989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (333666689) 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, 166833494 + 166833495.

It is an arithmetic number, because the mean of its divisors is an integer number (166833495).

Almost surely, 2^333666989 is an apocalyptic number.

It is an amenable number.

333666989 is a deficient number, since it is larger than the sum of its proper divisors (1).

333666989 is an equidigital number, since it uses as much as digits as its factorization.

333666989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3779136, while the sum is 53.

The square root of 333666989 is about 18266.5538348097. The cubic root of 333666989 is about 693.5925411226.

The spelling of 333666989 in words is "three hundred thirty-three million, six hundred sixty-six thousand, nine hundred eighty-nine".