398866211 has 6 divisors (see below), whose sum is σ = 403736700. Its totient is φ = 394053788.

The previous prime is 398866187. The next prime is 398866241. The reversal of 398866211 is 112668893.

It is not a de Polignac number, because 398866211 - 2¹⁴ = 398849827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398866241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22061 + ... + 35838.

It is an arithmetic number, because the mean of its divisors is an integer number (67289450).

Almost surely, 2^398866211 is an apocalyptic number.

398866211 is a deficient number, since it is larger than the sum of its proper divisors (4870489).

398866211 is an frugal number, since it uses more digits than its factorization.

398866211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58065 (or 57982 counting only the distinct ones).

The product of its digits is 124416, while the sum is 44.

The square root of 398866211 is about 19971.6351608976. The cubic root of 398866211 is about 736.1094885506.

The spelling of 398866211 in words is "three hundred ninety-eight million, eight hundred sixty-six thousand, two hundred eleven".