398216183 has 2 divisors, whose sum is σ = 398216184. Its totient is φ = 398216182.

The previous prime is 398216179. The next prime is 398216201. The reversal of 398216183 is 381612893.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 398216183 - 2² = 398216179 is a prime.

It is a super-2 number, since 2×398216183² = 317152256806178978, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 398216183.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398216683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199108091 + 199108092.

It is an arithmetic number, because the mean of its divisors is an integer number (199108092).

Almost surely, 2^398216183 is an apocalyptic number.

398216183 is a deficient number, since it is larger than the sum of its proper divisors (1).

398216183 is an equidigital number, since it uses as much as digits as its factorization.

398216183 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 41.

The square root of 398216183 is about 19955.3547450302. The cubic root of 398216183 is about 735.7093945408.

The spelling of 398216183 in words is "three hundred ninety-eight million, two hundred sixteen thousand, one hundred eighty-three".