386538891 has 8 divisors (see below), whose sum is σ = 520202304. Its totient is φ = 255284040.

The previous prime is 386538881. The next prime is 386538899. The reversal of 386538891 is 198835683.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 386538891 - 2¹⁸ = 386276747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (386538899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 601765 + ... + 602406.

It is an arithmetic number, because the mean of its divisors is an integer number (65025288).

Almost surely, 2^386538891 is an apocalyptic number.

386538891 is a deficient number, since it is larger than the sum of its proper divisors (133663413).

386538891 is a wasteful number, since it uses less digits than its factorization.

386538891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204281.

The product of its digits is 1244160, while the sum is 51.

The square root of 386538891 is about 19660.5923359394. The cubic root of 386538891 is about 728.4466193137.

The spelling of 386538891 in words is "three hundred eighty-six million, five hundred thirty-eight thousand, eight hundred ninety-one".