385298855 has 4 divisors (see below), whose sum is σ = 462358632. Its totient is φ = 308239080.

The previous prime is 385298839. The next prime is 385298867. The reversal of 385298855 is 558892583.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 385298855 - 2⁴ = 385298839 is a prime.

It is a super-2 number, since 2×385298855² = 296910415328622050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 385298797 and 385298806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38529881 + ... + 38529890.

It is an arithmetic number, because the mean of its divisors is an integer number (115589658).

Almost surely, 2^385298855 is an apocalyptic number.

385298855 is a deficient number, since it is larger than the sum of its proper divisors (77059777).

385298855 is an equidigital number, since it uses as much as digits as its factorization.

385298855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77059776.

The product of its digits is 3456000, while the sum is 53.

The square root of 385298855 is about 19629.0309236090. The cubic root of 385298855 is about 727.6668205042. Note that the first 3 decimals are identical.

The spelling of 385298855 in words is "three hundred eighty-five million, two hundred ninety-eight thousand, eight hundred fifty-five".