386380769 has 4 divisors (see below), whose sum is σ = 386420244. Its totient is φ = 386341296.

The previous prime is 386380747. The next prime is 386380781. The reversal of 386380769 is 967083683.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 967083683 = 199 ⋅4859717.

It can be written as a sum of positive squares in 2 ways, for example, as 305830144 + 80550625 = 17488^2 + 8975^2 .

It is a cyclic number.

It is not a de Polignac number, because 386380769 - 2¹² = 386376673 is a prime.

It is a super-2 number, since 2×386380769² = 298580197306062722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (386380469) 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, 7199 + ... + 28715.

It is an arithmetic number, because the mean of its divisors is an integer number (96605061).

Almost surely, 2^386380769 is an apocalyptic number.

It is an amenable number.

386380769 is a deficient number, since it is larger than the sum of its proper divisors (39475).

386380769 is a wasteful number, since it uses less digits than its factorization.

386380769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39474.

The product of its (nonzero) digits is 1306368, while the sum is 50.

The square root of 386380769 is about 19656.5706317252. The cubic root of 386380769 is about 728.3472768769.

The spelling of 386380769 in words is "three hundred eighty-six million, three hundred eighty thousand, seven hundred sixty-nine".