330999749 has 2 divisors, whose sum is σ = 330999750. Its totient is φ = 330999748.

The previous prime is 330999661. The next prime is 330999751. The reversal of 330999749 is 947999033.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 330330625 + 669124 = 18175^2 + 818^2 .

It is a cyclic number.

It is not a de Polignac number, because 330999749 - 2²⁴ = 314222533 is a prime.

Together with 330999751, it forms a pair of twin primes.

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 330999749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (330999769) 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, 165499874 + 165499875.

It is an arithmetic number, because the mean of its divisors is an integer number (165499875).

Almost surely, 2^330999749 is an apocalyptic number.

It is an amenable number.

330999749 is a deficient number, since it is larger than the sum of its proper divisors (1).

330999749 is an equidigital number, since it uses as much as digits as its factorization.

330999749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1653372, while the sum is 53.

The square root of 330999749 is about 18193.3985005551. The cubic root of 330999749 is about 691.7394668103.

The spelling of 330999749 in words is "three hundred thirty million, nine hundred ninety-nine thousand, seven hundred forty-nine".