398452937 has 2 divisors, whose sum is σ = 398452938. Its totient is φ = 398452936.

The previous prime is 398452891. The next prime is 398452973. The reversal of 398452937 is 739254893.

It is a happy number.

Together with next prime (398452973) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 312723856 + 85729081 = 17684^2 + 9259^2 .

It is a cyclic number.

It is not a de Polignac number, because 398452937 - 2¹⁰ = 398451913 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (398452237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199226468 + 199226469.

It is an arithmetic number, because the mean of its divisors is an integer number (199226469).

Almost surely, 2^398452937 is an apocalyptic number.

It is an amenable number.

398452937 is a deficient number, since it is larger than the sum of its proper divisors (1).

398452937 is an equidigital number, since it uses as much as digits as its factorization.

398452937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 50.

The square root of 398452937 is about 19961.2859555691. The cubic root of 398452937 is about 735.8551676507.

The spelling of 398452937 in words is "three hundred ninety-eight million, four hundred fifty-two thousand, nine hundred thirty-seven".