398283241 has 2 divisors, whose sum is σ = 398283242. Its totient is φ = 398283240.

The previous prime is 398283239. The next prime is 398283251. The reversal of 398283241 is 142382893.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 362331225 + 35952016 = 19035^2 + 5996^2 .

It is an emirp because it is prime and its reverse (142382893) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 398283241 - 2¹ = 398283239 is a prime.

It is a super-2 number, since 2×398283241² = 317259080122928162, which contains 22 as substring.

Together with 398283239, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 398283194 and 398283203.

It is not a weakly prime, because it can be changed into another prime (398283251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199141620 + 199141621.

It is an arithmetic number, because the mean of its divisors is an integer number (199141621).

Almost surely, 2^398283241 is an apocalyptic number.

It is an amenable number.

398283241 is a deficient number, since it is larger than the sum of its proper divisors (1).

398283241 is an equidigital number, since it uses as much as digits as its factorization.

398283241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 40.

The square root of 398283241 is about 19957.0348749507. The cubic root of 398283241 is about 735.7506890551.

The spelling of 398283241 in words is "three hundred ninety-eight million, two hundred eighty-three thousand, two hundred forty-one".