393308087 has 2 divisors, whose sum is σ = 393308088. Its totient is φ = 393308086.

The previous prime is 393308081. The next prime is 393308089. The reversal of 393308087 is 780803393.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 393308087 - 2²⁴ = 376530871 is a prime.

Together with 393308089, 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 (393308081) 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, 196654043 + 196654044.

It is an arithmetic number, because the mean of its divisors is an integer number (196654044).

Almost surely, 2^393308087 is an apocalyptic number.

393308087 is a deficient number, since it is larger than the sum of its proper divisors (1).

393308087 is an equidigital number, since it uses as much as digits as its factorization.

393308087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 393308087 is about 19831.9965459860. The cubic root of 393308087 is about 732.6743011459.

The spelling of 393308087 in words is "three hundred ninety-three million, three hundred eight thousand, eighty-seven".