398390341 has 2 divisors, whose sum is σ = 398390342. Its totient is φ = 398390340.

The previous prime is 398390339. The next prime is 398390381. The reversal of 398390341 is 143093893.

It is an a-pointer prime, because the next prime (398390381) can be obtained adding 398390341 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 230584225 + 167806116 = 15185^2 + 12954^2 .

It is a cyclic number.

It is not a de Polignac number, because 398390341 - 2¹ = 398390339 is a prime.

Together with 398390339, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 398390294 and 398390303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398390381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199195170 + 199195171.

It is an arithmetic number, because the mean of its divisors is an integer number (199195171).

Almost surely, 2^398390341 is an apocalyptic number.

It is an amenable number.

398390341 is a deficient number, since it is larger than the sum of its proper divisors (1).

398390341 is an equidigital number, since it uses as much as digits as its factorization.

398390341 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 398390341 is about 19959.7179589292. The cubic root of 398390341 is about 735.8166319391.

The spelling of 398390341 in words is "three hundred ninety-eight million, three hundred ninety thousand, three hundred forty-one".