332642809 has 2 divisors, whose sum is σ = 332642810. Its totient is φ = 332642808.

The previous prime is 332642749. The next prime is 332642831. The reversal of 332642809 is 908246233.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205291584 + 127351225 = 14328^2 + 11285^2 .

It is a cyclic number.

It is not a de Polignac number, because 332642809 - 2¹⁵ = 332610041 is a prime.

It is a super-2 number, since 2×332642809² = 221302476758820962, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (332642309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166321404 + 166321405.

It is an arithmetic number, because the mean of its divisors is an integer number (166321405).

Almost surely, 2^332642809 is an apocalyptic number.

It is an amenable number.

332642809 is a deficient number, since it is larger than the sum of its proper divisors (1).

332642809 is an equidigital number, since it uses as much as digits as its factorization.

332642809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 332642809 is about 18238.4979918852. The cubic root of 332642809 is about 692.8821605267.

The spelling of 332642809 in words is "three hundred thirty-two million, six hundred forty-two thousand, eight hundred nine".