387912085 has 24 divisors (see below), whose sum is σ = 512967168. Its totient is φ = 281397600.

The previous prime is 387912071. The next prime is 387912097. The reversal of 387912085 is 580219783.

It is a de Polignac number, because none of the positive numbers 2^k-387912085 is a prime.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 390940 + ... + 391930.

It is an arithmetic number, because the mean of its divisors is an integer number (21373632).

Almost surely, 2^387912085 is an apocalyptic number.

It is an amenable number.

387912085 is a deficient number, since it is larger than the sum of its proper divisors (125055083).

387912085 is a wasteful number, since it uses less digits than its factorization.

387912085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1665 (or 1654 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 387912085 is about 19695.4838732132. The cubic root of 387912085 is about 729.3082112085.

The spelling of 387912085 in words is "three hundred eighty-seven million, nine hundred twelve thousand, eighty-five".