385590266 has 4 divisors (see below), whose sum is σ = 578385402. Its totient is φ = 192795132.

The previous prime is 385590259. The next prime is 385590269. The reversal of 385590266 is 662095583.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 662095583 = 17 ⋅38946799.

It can be written as a sum of positive squares in only one way, i.e., 205091041 + 180499225 = 14321^2 + 13435^2 .

It is not an unprimeable number, because it can be changed into a prime (385590269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96397565 + ... + 96397568.

Almost surely, 2^385590266 is an apocalyptic number.

385590266 is a deficient number, since it is larger than the sum of its proper divisors (192795136).

385590266 is a wasteful number, since it uses less digits than its factorization.

385590266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192795135.

The product of its (nonzero) digits is 388800, while the sum is 44.

The square root of 385590266 is about 19636.4524800179. The cubic root of 385590266 is about 727.8502250450.

The spelling of 385590266 in words is "three hundred eighty-five million, five hundred ninety thousand, two hundred sixty-six".