388998041 has 2 divisors, whose sum is σ = 388998042. Its totient is φ = 388998040.

The previous prime is 388998031. The next prime is 388998053. The reversal of 388998041 is 140899883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 383376400 + 5621641 = 19580^2 + 2371^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-388998041 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (388998031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194499020 + 194499021.

It is an arithmetic number, because the mean of its divisors is an integer number (194499021).

Almost surely, 2^388998041 is an apocalyptic number.

It is an amenable number.

388998041 is a deficient number, since it is larger than the sum of its proper divisors (1).

388998041 is an equidigital number, since it uses as much as digits as its factorization.

388998041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497664, while the sum is 50.

The square root of 388998041 is about 19723.0332606321. The cubic root of 388998041 is about 729.9881407969.

The spelling of 388998041 in words is "three hundred eighty-eight million, nine hundred ninety-eight thousand, forty-one".