398442211 has 2 divisors, whose sum is σ = 398442212. Its totient is φ = 398442210.

The previous prime is 398442199. The next prime is 398442251. The reversal of 398442211 is 112244893.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 398442211 - 2¹⁵ = 398409443 is a prime.

It is not a weakly prime, because it can be changed into another prime (398442251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199221105 + 199221106.

It is an arithmetic number, because the mean of its divisors is an integer number (199221106).

Almost surely, 2^398442211 is an apocalyptic number.

398442211 is a deficient number, since it is larger than the sum of its proper divisors (1).

398442211 is an equidigital number, since it uses as much as digits as its factorization.

398442211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 34.

The square root of 398442211 is about 19961.0172836957. The cubic root of 398442211 is about 735.8485647351.

The spelling of 398442211 in words is "three hundred ninety-eight million, four hundred forty-two thousand, two hundred eleven".