387116215 has 8 divisors (see below), whose sum is σ = 480558240. Its totient is φ = 299013792.

The previous prime is 387116207. The next prime is 387116267. The reversal of 387116215 is 512611783.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 387116215 - 2³ = 387116207 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1334739 + ... + 1335028.

It is an arithmetic number, because the mean of its divisors is an integer number (60069780).

Almost surely, 2^387116215 is an apocalyptic number.

387116215 is a deficient number, since it is larger than the sum of its proper divisors (93442025).

387116215 is a wasteful number, since it uses less digits than its factorization.

387116215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2669801.

The product of its digits is 10080, while the sum is 34.

The square root of 387116215 is about 19675.2691214123. The cubic root of 387116215 is about 728.8091016111.

Adding to 387116215 its reverse (512611783), we get a palindrome (899727998).

The spelling of 387116215 in words is "three hundred eighty-seven million, one hundred sixteen thousand, two hundred fifteen".