213398855 has 4 divisors (see below), whose sum is σ = 256078632. Its totient is φ = 170719080.

The previous prime is 213398839. The next prime is 213398863. The reversal of 213398855 is 558893312.

213398855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 213398855 - 2⁴ = 213398839 is a prime.

It is a super-2 number, since 2×213398855² = 91078142630622050, which contains 22 as substring.

It is a Duffinian number.

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, 21339881 + ... + 21339890.

It is an arithmetic number, because the mean of its divisors is an integer number (64019658).

Almost surely, 2^213398855 is an apocalyptic number.

213398855 is a deficient number, since it is larger than the sum of its proper divisors (42679777).

213398855 is an equidigital number, since it uses as much as digits as its factorization.

213398855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42679776.

The product of its digits is 259200, while the sum is 44.

The square root of 213398855 is about 14608.1776755350. The cubic root of 213398855 is about 597.5817993435.

The spelling of 213398855 in words is "two hundred thirteen million, three hundred ninety-eight thousand, eight hundred fifty-five".