385271693 has 4 divisors (see below), whose sum is σ = 385334940. Its totient is φ = 385208448.

The previous prime is 385271659. The next prime is 385271717. The reversal of 385271693 is 396172583.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 221354884 + 163916809 = 14878^2 + 12803^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385271693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385271633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21380 + ... + 35037.

It is an arithmetic number, because the mean of its divisors is an integer number (96333735).

Almost surely, 2^385271693 is an apocalyptic number.

It is an amenable number.

385271693 is a deficient number, since it is larger than the sum of its proper divisors (63247).

385271693 is an equidigital number, since it uses as much as digits as its factorization.

385271693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63246.

The product of its digits is 272160, while the sum is 44.

The square root of 385271693 is about 19628.3390280482. The cubic root of 385271693 is about 727.6497209200.

The spelling of 385271693 in words is "three hundred eighty-five million, two hundred seventy-one thousand, six hundred ninety-three".