598386421 has 2 divisors, whose sum is σ = 598386422. Its totient is φ = 598386420.

The previous prime is 598386407. The next prime is 598386443. The reversal of 598386421 is 124683895.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 582498225 + 15888196 = 24135^2 + 3986^2 .

It is a cyclic number.

It is not a de Polignac number, because 598386421 - 2¹¹ = 598384373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (598386461) 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, 299193210 + 299193211.

It is an arithmetic number, because the mean of its divisors is an integer number (299193211).

Almost surely, 2^598386421 is an apocalyptic number.

It is an amenable number.

598386421 is a deficient number, since it is larger than the sum of its proper divisors (1).

598386421 is an equidigital number, since it uses as much as digits as its factorization.

598386421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 46.

The square root of 598386421 is about 24461.9382102073. The cubic root of 598386421 is about 842.6759058248.

The spelling of 598386421 in words is "five hundred ninety-eight million, three hundred eighty-six thousand, four hundred twenty-one".