398287211 has 4 divisors (see below), whose sum is σ = 455185392. Its totient is φ = 341389032.

The previous prime is 398287207. The next prime is 398287231. The reversal of 398287211 is 112782893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112782893 = 3571 ⋅31583.

It is a cyclic number.

It is not a de Polignac number, because 398287211 - 2² = 398287207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398287231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28449080 + ... + 28449093.

It is an arithmetic number, because the mean of its divisors is an integer number (113796348).

Almost surely, 2^398287211 is an apocalyptic number.

398287211 is a deficient number, since it is larger than the sum of its proper divisors (56898181).

398287211 is an equidigital number, since it uses as much as digits as its factorization.

398287211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56898180.

The product of its digits is 48384, while the sum is 41.

The square root of 398287211 is about 19957.1343383763. The cubic root of 398287211 is about 735.7531336475.

The spelling of 398287211 in words is "three hundred ninety-eight million, two hundred eighty-seven thousand, two hundred eleven".