387216395 has 16 divisors (see below), whose sum is σ = 492464448. Its totient is φ = 291271680.

The previous prime is 387216391. The next prime is 387216407. The reversal of 387216395 is 593612783.

It is not a de Polignac number, because 387216395 - 2² = 387216391 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387216391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144962 + ... + 147608.

It is an arithmetic number, because the mean of its divisors is an integer number (30779028).

Almost surely, 2^387216395 is an apocalyptic number.

387216395 is a deficient number, since it is larger than the sum of its proper divisors (105248053).

387216395 is a wasteful number, since it uses less digits than its factorization.

387216395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4390.

The product of its digits is 272160, while the sum is 44.

The square root of 387216395 is about 19677.8147922985. The cubic root of 387216395 is about 728.8719645583.

The spelling of 387216395 in words is "three hundred eighty-seven million, two hundred sixteen thousand, three hundred ninety-five".