398411953 has 2 divisors, whose sum is σ = 398411954. Its totient is φ = 398411952.

The previous prime is 398411941. The next prime is 398411977. The reversal of 398411953 is 359114893.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 215296929 + 183115024 = 14673^2 + 13532^2 .

It is a cyclic number.

It is not a de Polignac number, because 398411953 - 2¹⁷ = 398280881 is a prime.

It is not a weakly prime, because it can be changed into another prime (398411933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199205976 + 199205977.

It is an arithmetic number, because the mean of its divisors is an integer number (199205977).

Almost surely, 2^398411953 is an apocalyptic number.

It is an amenable number.

398411953 is a deficient number, since it is larger than the sum of its proper divisors (1).

398411953 is an equidigital number, since it uses as much as digits as its factorization.

398411953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 43.

The square root of 398411953 is about 19960.2593420025. The cubic root of 398411953 is about 735.8299372998.

The spelling of 398411953 in words is "three hundred ninety-eight million, four hundred eleven thousand, nine hundred fifty-three".