598309 has 4 divisors (see below), whose sum is σ = 601216. Its totient is φ = 595404.

The previous prime is 598307. The next prime is 598333. The reversal of 598309 is 903895.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 903895 = 5 ⋅180779.

It is a cyclic number.

It is not a de Polignac number, because 598309 - 2¹ = 598307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (598303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1119 + ... + 1564.

It is an arithmetic number, because the mean of its divisors is an integer number (150304).

2⁵⁹⁸³⁰⁹ is an apocalyptic number.

It is an amenable number.

598309 is a deficient number, since it is larger than the sum of its proper divisors (2907).

598309 is a wasteful number, since it uses less digits than its factorization.

598309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2906.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 598309 is about 773.5043632715. The cubic root of 598309 is about 84.2639561626.

The spelling of 598309 in words is "five hundred ninety-eight thousand, three hundred nine".