369968309 has 2 divisors, whose sum is σ = 369968310. Its totient is φ = 369968308.

The previous prime is 369968303. The next prime is 369968311. The reversal of 369968309 is 903869963.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 369485284 + 483025 = 19222^2 + 695^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-369968309 is a prime.

Together with 369968311, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (369968303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 184984154 + 184984155.

It is an arithmetic number, because the mean of its divisors is an integer number (184984155).

Almost surely, 2^369968309 is an apocalyptic number.

It is an amenable number.

369968309 is a deficient number, since it is larger than the sum of its proper divisors (1).

369968309 is an equidigital number, since it uses as much as digits as its factorization.

369968309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1889568, while the sum is 53.

The square root of 369968309 is about 19234.5602757120. The cubic root of 369968309 is about 717.8849380981.

The spelling of 369968309 in words is "three hundred sixty-nine million, nine hundred sixty-eight thousand, three hundred nine".