398824249 has 2 divisors, whose sum is σ = 398824250. Its totient is φ = 398824248.

The previous prime is 398824243. The next prime is 398824313. The reversal of 398824249 is 942428893.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 300675600 + 98148649 = 17340^2 + 9907^2 .

It is a cyclic number.

It is not a de Polignac number, because 398824249 - 2³ = 398824241 is a prime.

It is not a weakly prime, because it can be changed into another prime (398824241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199412124 + 199412125.

It is an arithmetic number, because the mean of its divisors is an integer number (199412125).

Almost surely, 2^398824249 is an apocalyptic number.

It is an amenable number.

398824249 is a deficient number, since it is larger than the sum of its proper divisors (1).

398824249 is an equidigital number, since it uses as much as digits as its factorization.

398824249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 995328, while the sum is 49.

The square root of 398824249 is about 19970.5845933463. The cubic root of 398824249 is about 736.0836739552.

It can be divided in two parts, 39 and 8824249, that added together give a palindrome (8824288).

The spelling of 398824249 in words is "three hundred ninety-eight million, eight hundred twenty-four thousand, two hundred forty-nine".