398598523 has 2 divisors, whose sum is σ = 398598524. Its totient is φ = 398598522.

The previous prime is 398598509. The next prime is 398598539. The reversal of 398598523 is 325895893.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 398598523 - 2⁵ = 398598491 is a prime.

It is not a weakly prime, because it can be changed into another prime (398598593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199299261 + 199299262.

It is an arithmetic number, because the mean of its divisors is an integer number (199299262).

Almost surely, 2^398598523 is an apocalyptic number.

398598523 is a deficient number, since it is larger than the sum of its proper divisors (1).

398598523 is an equidigital number, since it uses as much as digits as its factorization.

398598523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2332800, while the sum is 52.

The square root of 398598523 is about 19964.9323314656. The cubic root of 398598523 is about 735.9447785394.

The spelling of 398598523 in words is "three hundred ninety-eight million, five hundred ninety-eight thousand, five hundred twenty-three".