998605239 has 8 divisors (see below), whose sum is σ = 1331760000. Its totient is φ = 665593656.

The previous prime is 998605219. The next prime is 998605253. The reversal of 998605239 is 932506899.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 998605239 - 2⁵ = 998605207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 998605191 and 998605200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998605219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18297 + ... + 48290.

It is an arithmetic number, because the mean of its divisors is an integer number (166470000).

Almost surely, 2^998605239 is an apocalyptic number.

998605239 is a deficient number, since it is larger than the sum of its proper divisors (333154761).

998605239 is a wasteful number, since it uses less digits than its factorization.

998605239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71589.

The product of its (nonzero) digits is 1049760, while the sum is 51.

The square root of 998605239 is about 31600.7157988549. The cubic root of 998605239 is about 999.5348633481.

The spelling of 998605239 in words is "nine hundred ninety-eight million, six hundred five thousand, two hundred thirty-nine".