385567169 has 4 divisors (see below), whose sum is σ = 415226196. Its totient is φ = 355908144.

The previous prime is 385567141. The next prime is 385567199. The reversal of 385567169 is 961765583.

It is a happy number.

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 215003569 + 170563600 = 14663^2 + 13060^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385567169 is a prime.

It is a super-2 number, since 2×385567169² = 297324083621349122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (385567109) 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, 14829494 + ... + 14829519.

It is an arithmetic number, because the mean of its divisors is an integer number (103806549).

Almost surely, 2^385567169 is an apocalyptic number.

It is an amenable number.

385567169 is a deficient number, since it is larger than the sum of its proper divisors (29659027).

385567169 is a wasteful number, since it uses less digits than its factorization.

385567169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29659026.

The product of its digits is 1360800, while the sum is 50.

The square root of 385567169 is about 19635.8643558159. The cubic root of 385567169 is about 727.8356919219.

The spelling of 385567169 in words is "three hundred eighty-five million, five hundred sixty-seven thousand, one hundred sixty-nine".