398213 has 2 divisors, whose sum is σ = 398214. Its totient is φ = 398212.

The previous prime is 398207. The next prime is 398219. The reversal of 398213 is 312893.

It is a balanced prime because it is at equal distance from previous prime (398207) and next prime (398219).

It can be written as a sum of positive squares in only one way, i.e., 315844 + 82369 = 562^2 + 287^2 .

It is a cyclic number.

It is not a de Polignac number, because 398213 - 2⁶ = 398149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199106 + 199107.

It is an arithmetic number, because the mean of its divisors is an integer number (199107).

2³⁹⁸²¹³ is an apocalyptic number.

It is an amenable number.

398213 is a deficient number, since it is larger than the sum of its proper divisors (1).

398213 is an equidigital number, since it uses as much as digits as its factorization.

398213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 26.

The square root of 398213 is about 631.0412030922. The cubic root of 398213 is about 73.5707434325.

The spelling of 398213 in words is "three hundred ninety-eight thousand, two hundred thirteen".