385261877 has 32 divisors (see below), whose sum is σ = 519746304. Its totient is φ = 275788800.

The previous prime is 385261873. The next prime is 385261913. The reversal of 385261877 is 778162583.

It is a happy number.

It is not a de Polignac number, because 385261877 - 2² = 385261873 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385261873) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 240443 + ... + 242039.

It is an arithmetic number, because the mean of its divisors is an integer number (16242072).

Almost surely, 2^385261877 is an apocalyptic number.

It is an amenable number.

385261877 is a deficient number, since it is larger than the sum of its proper divisors (134484427).

385261877 is a wasteful number, since it uses less digits than its factorization.

385261877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1869.

The product of its digits is 564480, while the sum is 47.

The square root of 385261877 is about 19628.0889798268. The cubic root of 385261877 is about 727.6435411509.

It can be divided in two parts, 385 and 261877, that added together give a palindrome (262262).

The spelling of 385261877 in words is "three hundred eighty-five million, two hundred sixty-one thousand, eight hundred seventy-seven".