388902271 has 2 divisors, whose sum is σ = 388902272. Its totient is φ = 388902270.

The previous prime is 388902263. The next prime is 388902281. The reversal of 388902271 is 172209883.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 388902271 - 2³ = 388902263 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 (388902281) 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, 194451135 + 194451136.

It is an arithmetic number, because the mean of its divisors is an integer number (194451136).

Almost surely, 2^388902271 is an apocalyptic number.

388902271 is a deficient number, since it is larger than the sum of its proper divisors (1).

388902271 is an equidigital number, since it uses as much as digits as its factorization.

388902271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 388902271 is about 19720.6052391908. The cubic root of 388902271 is about 729.9282290108.

The spelling of 388902271 in words is "three hundred eighty-eight million, nine hundred two thousand, two hundred seventy-one".