388901983 has 2 divisors, whose sum is σ = 388901984. Its totient is φ = 388901982.

The previous prime is 388901957. The next prime is 388901987. The reversal of 388901983 is 389109883.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-388901983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (388901987) 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, 194450991 + 194450992.

It is an arithmetic number, because the mean of its divisors is an integer number (194450992).

Almost surely, 2^388901983 is an apocalyptic number.

388901983 is a deficient number, since it is larger than the sum of its proper divisors (1).

388901983 is an equidigital number, since it uses as much as digits as its factorization.

388901983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 49.

The square root of 388901983 is about 19720.5979371823. The cubic root of 388901983 is about 729.9280488289.

The spelling of 388901983 in words is "three hundred eighty-eight million, nine hundred one thousand, nine hundred eighty-three".