998590598 has 4 divisors (see below), whose sum is σ = 1497885900. Its totient is φ = 499295298.

The previous prime is 998590597. The next prime is 998590603. The reversal of 998590598 is 895095899.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 895095899 = 23 ⋅38917213.

It is a super-3 number, since 3×998590598³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 998590598.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998590597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249647648 + ... + 249647651.

It is an arithmetic number, because the mean of its divisors is an integer number (374471475).

Almost surely, 2^998590598 is an apocalyptic number.

998590598 is a deficient number, since it is larger than the sum of its proper divisors (499295302).

998590598 is a wasteful number, since it uses less digits than its factorization.

998590598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499295301.

The product of its (nonzero) digits is 10497600, while the sum is 62.

The square root of 998590598 is about 31600.4841418609. The cubic root of 998590598 is about 999.5299784477.

The spelling of 998590598 in words is "nine hundred ninety-eight million, five hundred ninety thousand, five hundred ninety-eight".