388900427 has 2 divisors, whose sum is σ = 388900428. Its totient is φ = 388900426.

The previous prime is 388900409. The next prime is 388900433. The reversal of 388900427 is 724009883.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 388900427 - 2¹⁴ = 388884043 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (388900727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194450213 + 194450214.

It is an arithmetic number, because the mean of its divisors is an integer number (194450214).

Almost surely, 2^388900427 is an apocalyptic number.

388900427 is a deficient number, since it is larger than the sum of its proper divisors (1).

388900427 is an equidigital number, since it uses as much as digits as its factorization.

388900427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 388900427 is about 19720.5584860064. The cubic root of 388900427 is about 729.9270753449.

The spelling of 388900427 in words is "three hundred eighty-eight million, nine hundred thousand, four hundred twenty-seven".