387530071 has 4 divisors (see below), whose sum is σ = 392199192. Its totient is φ = 382860952.

The previous prime is 387530057. The next prime is 387530081. The reversal of 387530071 is 170035783.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 387530071 - 2¹³ = 387521879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387530021) 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 in 3 ways as a sum of consecutive naturals, for example, 2334436 + ... + 2334601.

It is an arithmetic number, because the mean of its divisors is an integer number (98049798).

Almost surely, 2^387530071 is an apocalyptic number.

387530071 is a deficient number, since it is larger than the sum of its proper divisors (4669121).

387530071 is an equidigital number, since it uses as much as digits as its factorization.

387530071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4669120.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 387530071 is about 19685.7834743756. The cubic root of 387530071 is about 729.0687261426.

The spelling of 387530071 in words is "three hundred eighty-seven million, five hundred thirty thousand, seventy-one".