387430871 has 4 divisors (see below), whose sum is σ = 387483912. Its totient is φ = 387377832.

The previous prime is 387430861. The next prime is 387430873. The reversal of 387430871 is 178034783.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 178034783 = 61 ⋅2918603.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-387430871 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 (387430873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13400 + ... + 30893.

It is an arithmetic number, because the mean of its divisors is an integer number (96870978).

Almost surely, 2^387430871 is an apocalyptic number.

387430871 is a deficient number, since it is larger than the sum of its proper divisors (53041).

387430871 is an equidigital number, since it uses as much as digits as its factorization.

387430871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53040.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 387430871 is about 19683.2637283556. The cubic root of 387430871 is about 729.0065117967.

The spelling of 387430871 in words is "three hundred eighty-seven million, four hundred thirty thousand, eight hundred seventy-one".