386891005 has 16 divisors (see below), whose sum is σ = 480757248. Its totient is φ = 298584000.

The previous prime is 386891003. The next prime is 386891009. The reversal of 386891005 is 500198683.

It is a happy number.

It is not a de Polignac number, because 386891005 - 2¹ = 386891003 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386891003) 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, 47535 + ... + 55075.

It is an arithmetic number, because the mean of its divisors is an integer number (30047328).

Almost surely, 2^386891005 is an apocalyptic number.

It is an amenable number.

386891005 is a deficient number, since it is larger than the sum of its proper divisors (93866243).

386891005 is a wasteful number, since it uses less digits than its factorization.

386891005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7908.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 386891005 is about 19669.5451142115. The cubic root of 386891005 is about 728.6677427366.

The spelling of 386891005 in words is "three hundred eighty-six million, eight hundred ninety-one thousand, five".