387860817 has 16 divisors (see below), whose sum is σ = 534330368. Its totient is φ = 250099920.

The previous prime is 387860791. The next prime is 387860881. The reversal of 387860817 is 718068783.

It is not a de Polignac number, because 387860817 - 2⁷ = 387860689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387860897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1309 + ... + 27882.

It is an arithmetic number, because the mean of its divisors is an integer number (33395648).

Almost surely, 2^387860817 is an apocalyptic number.

It is an amenable number.

387860817 is a deficient number, since it is larger than the sum of its proper divisors (146469551).

387860817 is a wasteful number, since it uses less digits than its factorization.

387860817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29340.

The product of its (nonzero) digits is 451584, while the sum is 48.

The square root of 387860817 is about 19694.1823135666. The cubic root of 387860817 is about 729.2760803708.

The spelling of 387860817 in words is "three hundred eighty-seven million, eight hundred sixty thousand, eight hundred seventeen".