387485515 has 4 divisors (see below), whose sum is σ = 464982624. Its totient is φ = 309988408.

The previous prime is 387485507. The next prime is 387485519. The reversal of 387485515 is 515584783.

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 387485515 - 2³ = 387485507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387485519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38748547 + ... + 38748556.

It is an arithmetic number, because the mean of its divisors is an integer number (116245656).

Almost surely, 2^387485515 is an apocalyptic number.

387485515 is a deficient number, since it is larger than the sum of its proper divisors (77497109).

387485515 is an equidigital number, since it uses as much as digits as its factorization.

387485515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77497108.

The product of its digits is 672000, while the sum is 46.

The square root of 387485515 is about 19684.6517622233. The cubic root of 387485515 is about 729.0407836820.

The spelling of 387485515 in words is "three hundred eighty-seven million, four hundred eighty-five thousand, five hundred fifteen".