398058049 has 2 divisors, whose sum is σ = 398058050. Its totient is φ = 398058048.

The previous prime is 398058047. The next prime is 398058071. The reversal of 398058049 is 940850893.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 287913024 + 110145025 = 16968^2 + 10495^2 .

It is a cyclic number.

It is not a de Polignac number, because 398058049 - 2¹ = 398058047 is a prime.

Together with 398058047, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (398058047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199029024 + 199029025.

It is an arithmetic number, because the mean of its divisors is an integer number (199029025).

Almost surely, 2^398058049 is an apocalyptic number.

It is an amenable number.

398058049 is a deficient number, since it is larger than the sum of its proper divisors (1).

398058049 is an equidigital number, since it uses as much as digits as its factorization.

398058049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 398058049 is about 19951.3921569398. The cubic root of 398058049 is about 735.6119967976.

The spelling of 398058049 in words is "three hundred ninety-eight million, fifty-eight thousand, forty-nine".