398216201 has 2 divisors, whose sum is σ = 398216202. Its totient is φ = 398216200.

The previous prime is 398216183. The next prime is 398216251. The reversal of 398216201 is 102612893.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 373455625 + 24760576 = 19325^2 + 4976^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-398216201 is a prime.

It is a super-2 number, since 2×398216201² = 317152285477744802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (398216251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199108100 + 199108101.

It is an arithmetic number, because the mean of its divisors is an integer number (199108101).

Almost surely, 2^398216201 is an apocalyptic number.

It is an amenable number.

398216201 is a deficient number, since it is larger than the sum of its proper divisors (1).

398216201 is an equidigital number, since it uses as much as digits as its factorization.

398216201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 398216201 is about 19955.3551960370. The cubic root of 398216201 is about 735.7094056259.

The spelling of 398216201 in words is "three hundred ninety-eight million, two hundred sixteen thousand, two hundred one".