385582369 has 4 divisors (see below), whose sum is σ = 385823620. Its totient is φ = 385341120.

The previous prime is 385582363. The next prime is 385582381. The reversal of 385582369 is 963285583.

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 295427344 + 90155025 = 17188^2 + 9495^2 .

It is a cyclic number.

It is not a de Polignac number, because 385582369 - 2³ = 385582361 is a prime.

It is a super-2 number, since 2×385582369² = 297347526567304322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385582361) 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, 118212 + ... + 121429.

It is an arithmetic number, because the mean of its divisors is an integer number (96455905).

Almost surely, 2^385582369 is an apocalyptic number.

It is an amenable number.

385582369 is a deficient number, since it is larger than the sum of its proper divisors (241251).

385582369 is a wasteful number, since it uses less digits than its factorization.

385582369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241250.

The product of its digits is 1555200, while the sum is 49.

The square root of 385582369 is about 19636.2513988796. The cubic root of 385582369 is about 727.8452561501.

The spelling of 385582369 in words is "three hundred eighty-five million, five hundred eighty-two thousand, three hundred sixty-nine".