388526987 has 2 divisors, whose sum is σ = 388526988. Its totient is φ = 388526986.

The previous prime is 388526969. The next prime is 388527011. The reversal of 388526987 is 789625883.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 388526987 - 2⁸ = 388526731 is a prime.

It is not a weakly prime, because it can be changed into another prime (388526917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194263493 + 194263494.

It is an arithmetic number, because the mean of its divisors is an integer number (194263494).

Almost surely, 2^388526987 is an apocalyptic number.

388526987 is a deficient number, since it is larger than the sum of its proper divisors (1).

388526987 is an equidigital number, since it uses as much as digits as its factorization.

388526987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5806080, while the sum is 56.

The square root of 388526987 is about 19711.0879202544. The cubic root of 388526987 is about 729.6933640538.

The spelling of 388526987 in words is "three hundred eighty-eight million, five hundred twenty-six thousand, nine hundred eighty-seven".