387108893 has 2 divisors, whose sum is σ = 387108894. Its totient is φ = 387108892.

The previous prime is 387108859. The next prime is 387108899. The reversal of 387108893 is 398801783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 235991044 + 151117849 = 15362^2 + 12293^2 .

It is a cyclic number.

It is not a de Polignac number, because 387108893 - 2²⁰ = 386060317 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (387108899) 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, 193554446 + 193554447.

It is an arithmetic number, because the mean of its divisors is an integer number (193554447).

Almost surely, 2^387108893 is an apocalyptic number.

It is an amenable number.

387108893 is a deficient number, since it is larger than the sum of its proper divisors (1).

387108893 is an equidigital number, since it uses as much as digits as its factorization.

387108893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 387108893 is about 19675.0830493800. The cubic root of 387108893 is about 728.8045066310.

The spelling of 387108893 in words is "three hundred eighty-seven million, one hundred eight thousand, eight hundred ninety-three".