330399997 has 2 divisors, whose sum is σ = 330399998. Its totient is φ = 330399996.

The previous prime is 330399977. The next prime is 330400027. The reversal of 330399997 is 799993033.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193182201 + 137217796 = 13899^2 + 11714^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-330399997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (330399967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165199998 + 165199999.

It is an arithmetic number, because the mean of its divisors is an integer number (165199999).

Almost surely, 2^330399997 is an apocalyptic number.

It is an amenable number.

330399997 is a deficient number, since it is larger than the sum of its proper divisors (1).

330399997 is an equidigital number, since it uses as much as digits as its factorization.

330399997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1240029, while the sum is 52.

The square root of 330399997 is about 18176.9083454805. The cubic root of 330399997 is about 691.3214171923.

It can be divided in two parts, 3303999 and 97, that multiplied together give a triangular number (320487903 = T₂₅₃₁₇).

The spelling of 330399997 in words is "three hundred thirty million, three hundred ninety-nine thousand, nine hundred ninety-seven".