388281097 has 2 divisors, whose sum is σ = 388281098. Its totient is φ = 388281096.

The previous prime is 388281041. The next prime is 388281109. The reversal of 388281097 is 790182883.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 383533056 + 4748041 = 19584^2 + 2179^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-388281097 is a prime.

It is not a weakly prime, because it can be changed into another prime (388281007) 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, 194140548 + 194140549.

It is an arithmetic number, because the mean of its divisors is an integer number (194140549).

Almost surely, 2^388281097 is an apocalyptic number.

It is an amenable number.

388281097 is a deficient number, since it is larger than the sum of its proper divisors (1).

388281097 is an equidigital number, since it uses as much as digits as its factorization.

388281097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 46.

The square root of 388281097 is about 19704.8495807504. The cubic root of 388281097 is about 729.5393960569.

The spelling of 388281097 in words is "three hundred eighty-eight million, two hundred eighty-one thousand, ninety-seven".