386821085 has 16 divisors (see below), whose sum is σ = 536893056. Its totient is φ = 262051008.

The previous prime is 386821067. The next prime is 386821091. The reversal of 386821085 is 580128683.

It is a cyclic number.

It is not a de Polignac number, because 386821085 - 2¹⁶ = 386755549 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63674 + ... + 69483.

It is an arithmetic number, because the mean of its divisors is an integer number (33555816).

Almost surely, 2^386821085 is an apocalyptic number.

386821085 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

386821085 is a deficient number, since it is larger than the sum of its proper divisors (150071971).

386821085 is a wasteful number, since it uses less digits than its factorization.

386821085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133252.

The product of its (nonzero) digits is 92160, while the sum is 41.

The square root of 386821085 is about 19667.7676669214. The cubic root of 386821085 is about 728.6238444833.

The spelling of 386821085 in words is "three hundred eighty-six million, eight hundred twenty-one thousand, eighty-five".