388086971 has 2 divisors, whose sum is σ = 388086972. Its totient is φ = 388086970.

The previous prime is 388086949. The next prime is 388086973. The reversal of 388086971 is 179680883.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 388086971 - 2¹⁰ = 388085947 is a prime.

It is a super-2 number, since 2×388086971² = 301222994119909682, which contains 22 as substring.

Together with 388086973, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (388086973) 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, 194043485 + 194043486.

It is an arithmetic number, because the mean of its divisors is an integer number (194043486).

Almost surely, 2^388086971 is an apocalyptic number.

388086971 is a deficient number, since it is larger than the sum of its proper divisors (1).

388086971 is an equidigital number, since it uses as much as digits as its factorization.

388086971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 50.

The square root of 388086971 is about 19699.9231216774. The cubic root of 388086971 is about 729.4177950016.

The spelling of 388086971 in words is "three hundred eighty-eight million, eighty-six thousand, nine hundred seventy-one".