330998389 has 2 divisors, whose sum is σ = 330998390. Its totient is φ = 330998388.

The previous prime is 330998351. The next prime is 330998399. The reversal of 330998389 is 983899033.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180445489 + 150552900 = 13433^2 + 12270^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-330998389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (330998309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165499194 + 165499195.

It is an arithmetic number, because the mean of its divisors is an integer number (165499195).

Almost surely, 2^330998389 is an apocalyptic number.

It is an amenable number.

330998389 is a deficient number, since it is larger than the sum of its proper divisors (1).

330998389 is an equidigital number, since it uses as much as digits as its factorization.

330998389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1259712, while the sum is 52.

The square root of 330998389 is about 18193.3611243222. The cubic root of 330998389 is about 691.7385194108.

The spelling of 330998389 in words is "three hundred thirty million, nine hundred ninety-eight thousand, three hundred eighty-nine".