385683769 has 4 divisors (see below), whose sum is σ = 386397220. Its totient is φ = 384970320.

The previous prime is 385683763. The next prime is 385683773. The reversal of 385683769 is 967386583.

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 145805625 + 239878144 = 12075^2 + 15488^2 .

It is a cyclic number.

It is not a de Polignac number, because 385683769 - 2¹⁷ = 385552697 is a prime.

It is a super-2 number, since 2×385683769² = 297503939340090722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385683763) 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, 355914 + ... + 356995.

It is an arithmetic number, because the mean of its divisors is an integer number (96599305).

Almost surely, 2^385683769 is an apocalyptic number.

It is an amenable number.

385683769 is a deficient number, since it is larger than the sum of its proper divisors (713451).

385683769 is an equidigital number, since it uses as much as digits as its factorization.

385683769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713450.

The product of its digits is 6531840, while the sum is 55.

The square root of 385683769 is about 19638.8331883541. The cubic root of 385683769 is about 727.9090531891.

The spelling of 385683769 in words is "three hundred eighty-five million, six hundred eighty-three thousand, seven hundred sixty-nine".